diff --git a/go.mod b/go.mod
index 62e8c57a..671b6795 100644
--- a/go.mod
+++ b/go.mod
@@ -1,19 +1,19 @@
-module retrotxt.com/retrotxt
-
-go 1.13
-
-require (
-	github.com/alecthomas/chroma v0.7.3
-	github.com/aofei/mimesniffer v1.1.4
-	github.com/gookit/color v1.2.6
-	github.com/mozillazg/go-slugify v0.2.0
-	github.com/mozillazg/go-unidecode v0.1.1 // indirect
-	github.com/muesli/go-app-paths v0.2.1
-	github.com/spf13/cobra v1.0.0
-	github.com/spf13/viper v1.7.0
-	github.com/tdewolff/minify v2.3.6+incompatible
-	github.com/tdewolff/parse v2.3.4+incompatible // indirect
-	github.com/tdewolff/test v1.0.6 // indirect
-	golang.org/x/text v0.3.3
-	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776
-)
+module retrotxt.com/retrotxt
+
+go 1.13
+
+require (
+	github.com/alecthomas/chroma v0.7.3
+	github.com/aofei/mimesniffer v1.1.4
+	github.com/gookit/color v1.2.6
+	github.com/mozillazg/go-slugify v0.2.0
+	github.com/mozillazg/go-unidecode v0.1.1 // indirect
+	github.com/muesli/go-app-paths v0.2.1
+	github.com/spf13/cobra v1.0.0
+	github.com/spf13/viper v1.7.0
+	github.com/tdewolff/minify v2.3.6+incompatible
+	github.com/tdewolff/parse v2.3.4+incompatible // indirect
+	github.com/tdewolff/test v1.0.6 // indirect
+	golang.org/x/text v0.3.3
+	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776
+)
diff --git a/go.sum b/go.sum
index 7137a5dc..fe157de3 100644
--- a/go.sum
+++ b/go.sum
@@ -1,367 +1,367 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
-cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
-cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
-cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
-cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
-cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
-cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
-cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
-cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
-cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
-dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/alecthomas/assert v0.0.0-20170929043011-405dbfeb8e38 h1:smF2tmSOzy2Mm+0dGI2AIUHY+w0BUc+4tn40djz7+6U=
-github.com/alecthomas/assert v0.0.0-20170929043011-405dbfeb8e38/go.mod h1:r7bzyVFMNntcxPZXK3/+KdruV1H5KSlyVY0gc+NgInI=
-github.com/alecthomas/chroma v0.7.3 h1:NfdAERMy+esYQs8OXk0I868/qDxxCEo7FMz1WIqMAeI=
-github.com/alecthomas/chroma v0.7.3/go.mod h1:sko8vR34/90zvl5QdcUdvzL3J8NKjAUx9va9jPuFNoM=
-github.com/alecthomas/colour v0.0.0-20160524082231-60882d9e2721 h1:JHZL0hZKJ1VENNfmXvHbgYlbUOvpzYzvy2aZU5gXVeo=
-github.com/alecthomas/colour v0.0.0-20160524082231-60882d9e2721/go.mod h1:QO9JBoKquHd+jz9nshCh40fOfO+JzsoXy8qTHF68zU0=
-github.com/alecthomas/kong v0.2.4/go.mod h1:kQOmtJgV+Lb4aj+I2LEn40cbtawdWJ9Y8QLq+lElKxE=
-github.com/alecthomas/repr v0.0.0-20180818092828-117648cd9897 h1:p9Sln00KOTlrYkxI1zYWl1QLnEqAqEARBEYa8FQnQcY=
-github.com/alecthomas/repr v0.0.0-20180818092828-117648cd9897/go.mod h1:xTS7Pm1pD1mvyM075QCDSRqH6qRLXylzS24ZTpRiSzQ=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/aofei/mimesniffer v1.1.4 h1:UHWJSoEwQUUcVCMV1CzCzGaFkzy+tuk4YjPpTKxF48w=
-github.com/aofei/mimesniffer v1.1.4/go.mod h1:qKfo48RY7J7hyCwuMhkbeiT1XFrZ2Q3JbJcmyBHpUvM=
-github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
-github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
-github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
-github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
-github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
-github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
-github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
-github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
-github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
-github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
-github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
-github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
-github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
-github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
-github.com/danwakefield/fnmatch v0.0.0-20160403171240-cbb64ac3d964 h1:y5HC9v93H5EPKqaS1UYVg1uYah5Xf51mBfIoWehClUQ=
-github.com/danwakefield/fnmatch v0.0.0-20160403171240-cbb64ac3d964/go.mod h1:Xd9hchkHSWYkEqJwUGisez3G1QY8Ryz0sdWrLPMGjLk=
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-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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-github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
-github.com/dlclark/regexp2 v1.2.0 h1:8sAhBGEM0dRWogWqWyQeIJnxjWO6oIjl8FKqREDsGfk=
-github.com/dlclark/regexp2 v1.2.0/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
-github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
-github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
-github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
-github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
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-github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
-github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
-github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
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diff --git a/internal/.version b/internal/.version
index 818944f5..df5db66f 100644
--- a/internal/.version
+++ b/internal/.version
@@ -1 +1 @@
-0.0.22
+0.0.23
diff --git a/lib/convert/simple.go b/lib/convert/simple.go
index 38f5fd51..8ac07a6b 100644
--- a/lib/convert/simple.go
+++ b/lib/convert/simple.go
@@ -1,57 +1,57 @@
-package convert
-
-import (
-	"errors"
-	"fmt"
-	"io/ioutil"
-	"strings"
-	"unicode/utf8"
-
-	"golang.org/x/text/encoding/charmap"
-	"golang.org/x/text/transform"
-)
-
-var ErrNoUTF8 = errors.New("string is not encoded as utf8")
-
-// DString decodes simple character encoding text.
-func DString(s string, c *charmap.Charmap) (result []byte, err error) {
-	decoder := c.NewDecoder()
-	reader := transform.NewReader(strings.NewReader(s), decoder)
-	result, err = ioutil.ReadAll(reader)
-	if err != nil {
-		return nil, fmt.Errorf("dstring ioutil readall error: %w", err)
-	}
-	return result, nil
-}
-
-// EString encodes text into a simple character encoding.
-func EString(s string, c *charmap.Charmap) (result []byte, err error) {
-	if !utf8.Valid([]byte(s)) {
-		return result, fmt.Errorf("estring: %w", ErrNoUTF8)
-	}
-	encoder := c.NewEncoder()
-	reader := transform.NewReader(strings.NewReader(s), encoder)
-	result, err = ioutil.ReadAll(reader)
-	if err != nil {
-		return nil, fmt.Errorf("estring ioutil readall error: %w", err)
-	}
-	return result, nil
-}
-
-// D437 decodes IBM Code Page 437 encoded text.
-func D437(s string) (result []byte, err error) {
-	result, err = DString(s, charmap.CodePage437)
-	if err != nil {
-		return nil, fmt.Errorf("decode code page 437: %w", err)
-	}
-	return result, nil
-}
-
-// E437 encodes text into IBM Code Page 437.
-func E437(s string) (result []byte, err error) {
-	result, err = EString(s, charmap.CodePage437)
-	if err != nil {
-		return nil, fmt.Errorf("encode code page 437: %w", err)
-	}
-	return result, nil
-}
+package convert
+
+import (
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"strings"
+	"unicode/utf8"
+
+	"golang.org/x/text/encoding/charmap"
+	"golang.org/x/text/transform"
+)
+
+var ErrNoUTF8 = errors.New("string is not encoded as utf8")
+
+// DString decodes simple character encoding text.
+func DString(s string, c *charmap.Charmap) (result []byte, err error) {
+	decoder := c.NewDecoder()
+	reader := transform.NewReader(strings.NewReader(s), decoder)
+	result, err = ioutil.ReadAll(reader)
+	if err != nil {
+		return nil, fmt.Errorf("dstring ioutil readall error: %w", err)
+	}
+	return result, nil
+}
+
+// EString encodes text into a simple character encoding.
+func EString(s string, c *charmap.Charmap) (result []byte, err error) {
+	if !utf8.Valid([]byte(s)) {
+		return result, fmt.Errorf("estring: %w", ErrNoUTF8)
+	}
+	encoder := c.NewEncoder()
+	reader := transform.NewReader(strings.NewReader(s), encoder)
+	result, err = ioutil.ReadAll(reader)
+	if err != nil {
+		return nil, fmt.Errorf("estring ioutil readall error: %w", err)
+	}
+	return result, nil
+}
+
+// D437 decodes IBM Code Page 437 encoded text.
+func D437(s string) (result []byte, err error) {
+	result, err = DString(s, charmap.CodePage437)
+	if err != nil {
+		return nil, fmt.Errorf("decode code page 437: %w", err)
+	}
+	return result, nil
+}
+
+// E437 encodes text into IBM Code Page 437.
+func E437(s string) (result []byte, err error) {
+	result, err = EString(s, charmap.CodePage437)
+	if err != nil {
+		return nil, fmt.Errorf("encode code page 437: %w", err)
+	}
+	return result, nil
+}
diff --git a/lib/create/font.go b/lib/create/font.go
index f6184739..0ce24ba2 100644
--- a/lib/create/font.go
+++ b/lib/create/font.go
@@ -1,136 +1,136 @@
-package create
-
-import (
-	"bytes"
-	"encoding/base64"
-	"fmt"
-	"html/template"
-
-	"golang.org/x/text/encoding"
-	"golang.org/x/text/encoding/japanese"
-	"retrotxt.com/retrotxt/internal/pack"
-)
-
-type Font int
-
-const (
-	// Automatic uses AutoFont to suggest a font.
-	Automatic Font = iota
-	// Mona is a Japanese language font for ShiftJIS encoding.
-	Mona
-	// VGA is an all-purpose 8 pixel IBM/MS-DOS era VGA font.
-	VGA
-)
-
-func (f Font) String() string {
-	fonts := [...]string{"automatic", "mona", "vga"}
-	if f < Automatic || f > VGA {
-		return ""
-	}
-	return fonts[f]
-}
-
-// File is the packed filename of the font.
-func (f Font) File() string {
-	files := [...]string{"ibm-vga8", "mona", "ibm-vga8"}
-	if f < Automatic || f > VGA {
-		return ""
-	}
-	return fmt.Sprintf("%s.woff2", files[f])
-}
-
-// AutoFont applies the automatic font-family setting to suggest a font based on the given encoding.
-func AutoFont(e encoding.Encoding) Font {
-	if e == japanese.ShiftJIS {
-		return Mona
-	}
-	return VGA
-}
-
-// Family returns the named font.
-func Family(name string) Font {
-	switch name {
-	case "automatic", "a":
-		return Automatic
-	case "mona", "m":
-		return Mona
-	case "vga", "v":
-		return VGA
-	}
-	return -1
-}
-
-// Fonts are values for the CSS font-family attribute.
-func Fonts() []string {
-	return []string{Automatic.String(), Mona.String(), VGA.String()}
-}
-
-// FontCSS creates the CSS required for customized fonts.
-func FontCSS(name string, embed bool) (b []byte, err error) {
-	f := Family(name).String()
-	if f == "" {
-		return nil, fmt.Errorf("font css %q: %w", name, ErrName)
-	}
-	const css = `@font-face {
-  font-family: '{{.Name}}';
-  src: url({{.URL}}) format('woff2');
-  font-display: swap;
-}
-
-.font-{{.Name}} {
-  font-family: {{.Name}};
-}
-
-body {
-  font-family: {{.Name}};
-}
-
-main pre {
-  font-family: {{.Name}}; /* temp */
-}
-`
-	data := struct {
-		Name string
-		URL  template.HTML // use HTML type to avoid contextual encoding
-	}{
-		Name: f,
-	}
-	if embed {
-		url := ""
-		url, err = fontBase64(f)
-		if err != nil {
-			return nil, fmt.Errorf("binary font to base64 failed: %w", err)
-		}
-		data.URL = template.HTML(url)
-	} else {
-		data.URL = template.HTML(Family(name).File())
-	}
-	var out bytes.Buffer
-	t, err := template.New("fontface").Parse(css)
-	if err != nil {
-		return nil, fmt.Errorf("fontface new template failed: %w", err)
-	}
-	err = t.Execute(&out, data)
-	if err != nil {
-		return nil, fmt.Errorf("fontface execute template failed: %w", err)
-	}
-	return out.Bytes(), nil
-}
-
-func fontBase64(name string) (string, error) {
-	f := Family(name).File()
-	if f == "" {
-		return "", fmt.Errorf("font base64 %q: %w", name, ErrName)
-	}
-	b := pack.Get(fmt.Sprintf("font/%s", f))
-	if len(b) == 0 {
-		return "", fmt.Errorf("font base64 %q: %w", f, ErrPack)
-	}
-	var s bytes.Buffer
-	encoder := base64.NewEncoder(base64.StdEncoding, &s)
-	defer encoder.Close()
-	if _, err := encoder.Write(b); err != nil {
-		return "", fmt.Errorf("font base64 failed to write b: %w", err)
-	}
-	return fmt.Sprintf("data:application/font-woff2;charset=utf-8;base64,%s", &s), encoder.Close()
-}
+package create
+
+import (
+	"bytes"
+	"encoding/base64"
+	"fmt"
+	"html/template"
+
+	"golang.org/x/text/encoding"
+	"golang.org/x/text/encoding/japanese"
+	"retrotxt.com/retrotxt/internal/pack"
+)
+
+type Font int
+
+const (
+	// Automatic uses AutoFont to suggest a font.
+	Automatic Font = iota
+	// Mona is a Japanese language font for ShiftJIS encoding.
+	Mona
+	// VGA is an all-purpose 8 pixel IBM/MS-DOS era VGA font.
+	VGA
+)
+
+func (f Font) String() string {
+	fonts := [...]string{"automatic", "mona", "vga"}
+	if f < Automatic || f > VGA {
+		return ""
+	}
+	return fonts[f]
+}
+
+// File is the packed filename of the font.
+func (f Font) File() string {
+	files := [...]string{"ibm-vga8", "mona", "ibm-vga8"}
+	if f < Automatic || f > VGA {
+		return ""
+	}
+	return fmt.Sprintf("%s.woff2", files[f])
+}
+
+// AutoFont applies the automatic font-family setting to suggest a font based on the given encoding.
+func AutoFont(e encoding.Encoding) Font {
+	if e == japanese.ShiftJIS {
+		return Mona
+	}
+	return VGA
+}
+
+// Family returns the named font.
+func Family(name string) Font {
+	switch name {
+	case "automatic", "a":
+		return Automatic
+	case "mona", "m":
+		return Mona
+	case "vga", "v":
+		return VGA
+	}
+	return -1
+}
+
+// Fonts are values for the CSS font-family attribute.
+func Fonts() []string {
+	return []string{Automatic.String(), Mona.String(), VGA.String()}
+}
+
+// FontCSS creates the CSS required for customized fonts.
+func FontCSS(name string, embed bool) (b []byte, err error) {
+	f := Family(name).String()
+	if f == "" {
+		return nil, fmt.Errorf("font css %q: %w", name, ErrName)
+	}
+	const css = `@font-face {
+  font-family: '{{.Name}}';
+  src: url({{.URL}}) format('woff2');
+  font-display: swap;
+}
+
+.font-{{.Name}} {
+  font-family: {{.Name}};
+}
+
+body {
+  font-family: {{.Name}};
+}
+
+main pre {
+  font-family: {{.Name}}; /* temp */
+}
+`
+	data := struct {
+		Name string
+		URL  template.HTML // use HTML type to avoid contextual encoding
+	}{
+		Name: f,
+	}
+	if embed {
+		url := ""
+		url, err = fontBase64(f)
+		if err != nil {
+			return nil, fmt.Errorf("binary font to base64 failed: %w", err)
+		}
+		data.URL = template.HTML(url)
+	} else {
+		data.URL = template.HTML(Family(name).File())
+	}
+	var out bytes.Buffer
+	t, err := template.New("fontface").Parse(css)
+	if err != nil {
+		return nil, fmt.Errorf("fontface new template failed: %w", err)
+	}
+	err = t.Execute(&out, data)
+	if err != nil {
+		return nil, fmt.Errorf("fontface execute template failed: %w", err)
+	}
+	return out.Bytes(), nil
+}
+
+func fontBase64(name string) (string, error) {
+	f := Family(name).File()
+	if f == "" {
+		return "", fmt.Errorf("font base64 %q: %w", name, ErrName)
+	}
+	b := pack.Get(fmt.Sprintf("font/%s", f))
+	if len(b) == 0 {
+		return "", fmt.Errorf("font base64 %q: %w", f, ErrPack)
+	}
+	var s bytes.Buffer
+	encoder := base64.NewEncoder(base64.StdEncoding, &s)
+	defer encoder.Close()
+	if _, err := encoder.Write(b); err != nil {
+		return "", fmt.Errorf("font base64 failed to write b: %w", err)
+	}
+	return fmt.Sprintf("data:application/font-woff2;charset=utf-8;base64,%s", &s), encoder.Close()
+}
diff --git a/lib/filesystem/read.go b/lib/filesystem/read.go
index 333db5a0..73ebc4e4 100644
--- a/lib/filesystem/read.go
+++ b/lib/filesystem/read.go
@@ -1,240 +1,240 @@
-package filesystem
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"io/ioutil"
-	"os"
-
-	"retrotxt.com/retrotxt/lib/logs"
-)
-
-// IsPipe determines if Stdin (standard input) is piped from another command.
-func IsPipe() bool {
-	// source: https://dev.to/napicella/linux-pipes-in-golang-2e8j
-	fileInfo, err := os.Stdin.Stat()
-	if err != nil {
-		logs.Log(err)
-	}
-	return fileInfo.Mode()&os.ModeCharDevice == 0
-}
-
-// Read opens and returns the content of the named file.
-func Read(name string) ([]byte, error) {
-	return ReadAllBytes(name)
-}
-
-// ReadAllBytes reads the named file and returns the content as a byte array.
-// Create a word and random character generator to make files larger than 64k.
-func ReadAllBytes(name string) (data []byte, err error) {
-	file, err := os.Open(name)
-	if err != nil {
-		return nil, fmt.Errorf("read all bytes could not open file: %q: %w", name, err)
-	}
-	defer file.Close()
-	// bufio is the most performant way to scan streamed data
-	scanner := bufio.NewScanner(file)
-	// optional adjustment to the token size
-	// Go by default will scan 64 * 1024 bytes (64KB) per iteration
-	const max = 64 * 1024
-	scanner.Buffer(data, max)
-	// required, split scan into Buffer(data, x) sized byte chuncks
-	// otherwise scanner will panic on files larger than 64 * 1024 bytes
-	scanner.Split(bufio.ScanBytes)
-	for scanner.Scan() {
-		data = append(data, scanner.Bytes()...)
-	}
-	if err = scanner.Err(); err != nil {
-		return data, fmt.Errorf("read all bytes could not scan file: %q: %w", name, err)
-	}
-	return data, file.Close()
-}
-
-// ReadChunk reads and returns the start of the named file.
-func ReadChunk(name string, chars int) (data []byte, err error) {
-	file, err := os.Open(name)
-	if err != nil {
-		return nil, fmt.Errorf("read chunk could not open file: %q: %w", name, err)
-	}
-	defer file.Close()
-	scanner := bufio.NewScanner(file)
-	scanner.Split(bufio.ScanRunes)
-	count := 0
-	for scanner.Scan() {
-		count++
-		if count > chars {
-			break
-		}
-		data = append(data, scanner.Bytes()...)
-	}
-	if err = scanner.Err(); err != nil {
-		return data, fmt.Errorf("read chunk could not scan file: %q: %w", name, err)
-	}
-	return data, file.Close()
-}
-
-// ReadColumns counts the number of characters used per line in the named file.
-func ReadColumns(name string) (count int, err error) {
-	file, err := os.Open(name)
-	if err != nil {
-		return -1, fmt.Errorf("read columns could not open file: %q: %w", name, err)
-	}
-	defer file.Close()
-	nl, err := ReadNewlines(name)
-	if err != nil {
-		return -1, fmt.Errorf("read columns could not find the newline method: %w", err)
-	}
-	count, err = Columns(file, nl)
-	if err != nil {
-		return -1, fmt.Errorf("read columns count the file: %q: %w", name, err)
-	}
-	return count, file.Close()
-}
-
-// ReadControls counts the number of ANSI escape sequences in the named file.
-func ReadControls(name string) (count int, err error) {
-	file, err := os.Open(name)
-	if err != nil {
-		return -1, fmt.Errorf("read countrols could not open file: %q: %w", name, err)
-	}
-	defer file.Close()
-	count, err = Controls(file)
-	if err != nil {
-		return -1, fmt.Errorf("read countrols could not parse the file: %q: %w", name, err)
-	}
-	return count, file.Close()
-}
-
-// ReadLine reads a named file location or a named temporary file and returns its content.
-func ReadLine(name, newline string) (text string, err error) {
-	var path, n = tempFile(name), nl(newline)
-	file, err := os.OpenFile(path, os.O_RDONLY, filemode)
-	if err != nil {
-		return text, fmt.Errorf("read line could not open file: %q: %w", name, err)
-	}
-	defer file.Close()
-	// bufio is the most performant
-	scanner := bufio.NewScanner(file)
-	for scanner.Scan() {
-		text += fmt.Sprintf("%s%s", scanner.Text(), n)
-	}
-	if err = scanner.Err(); err != nil {
-		return text, fmt.Errorf("read line could not scan file: %w", err)
-	}
-	return text, file.Close()
-}
-
-// ReadLines counts the number of lines in the named file.
-func ReadLines(name string) (count int, err error) {
-	file, err := os.Open(name)
-	if err != nil {
-		return -1, fmt.Errorf("read lines could not open file: %q: %w", name, err)
-	}
-	defer file.Close()
-	nl, err := ReadNewlines(name)
-	if err != nil {
-		return -1, fmt.Errorf("read lines could not scan the file: %w", err)
-	}
-	count, err = Lines(file, nl)
-	if err != nil {
-		return -1, fmt.Errorf("read tail could not open file: %q: %w", name, err)
-	}
-	return count, file.Close()
-}
-
-// ReadNewlines scans the named file for the most commonly used newline method.
-func ReadNewlines(name string) ([2]rune, error) {
-	z := [2]rune{0, 0}
-	file, err := os.Open(name)
-	if err != nil {
-		return z, fmt.Errorf("read new lines could not open file: %q: %w", name, err)
-	}
-	defer file.Close()
-	b, err := ioutil.ReadAll(file)
-	if err != nil {
-		return z, fmt.Errorf("read new lines could not read the file: %q: %w", name, err)
-	}
-	return Newlines(true, bytes.Runes(b)...), file.Close()
-}
-
-// ReadPipe reads data piped by the operating system's STDIN.
-// If no data is detected the program will exit.
-func ReadPipe() (b []byte, err error) {
-	scanner := bufio.NewScanner(os.Stdin)
-	for scanner.Scan() {
-		b = append(b, scanner.Bytes()...)
-	}
-	if err = scanner.Err(); err != nil {
-		return b, fmt.Errorf("read pipe could not scan stdin: %w", err)
-	}
-	if len(b) == 0 {
-		os.Exit(0)
-	}
-	return b, nil
-}
-
-// ReadRunes returns the number of runes in the named file.
-func ReadRunes(name string) (count int, err error) {
-	file, err := os.Open(name)
-	if err != nil {
-		return 0, fmt.Errorf("read runes could not open file: %q: %w", name, err)
-	}
-	defer file.Close()
-	count, err = Runes(file)
-	if err != nil {
-		return 0, fmt.Errorf("read runes could not calculate this file: %q: %w", name, err)
-	}
-	return count, file.Close()
-}
-
-// ReadTail reads the named file from the offset position relative to the end of the file.
-func ReadTail(name string, offset int) (data []byte, err error) {
-	file, err := os.Open(name)
-	if err != nil {
-		return data, fmt.Errorf("read tail could not open file: %q: %w", name, err)
-	}
-	defer file.Close()
-	count, total := 0, 0
-	total, err = ReadRunes(name)
-	if err != nil {
-		return data, fmt.Errorf("read tail could not read runes: %q: %w", name, err)
-	}
-	// bufio is the most performant
-	scanner := bufio.NewScanner(file)
-	scanner.Split(bufio.ScanRunes)
-	for scanner.Scan() {
-		count++
-		if count <= (total - offset) {
-			continue
-		}
-		data = append(data, scanner.Bytes()...)
-	}
-	if err = scanner.Err(); err != nil {
-		return data, fmt.Errorf("read tail could scan file bytes: %q: %w", name, err)
-	}
-	return data, file.Close()
-}
-
-// ReadText reads a named file location or a named temporary file and returns its content.
-func ReadText(name string) (text string, err error) {
-	text, err = ReadLine(name, "")
-	if err != nil {
-		return text, fmt.Errorf("read text: %q: %w", name, err)
-	}
-	return text, nil
-}
-
-// ReadWords counts the number of spaced words in the named file.
-func ReadWords(name string) (count int, err error) {
-	file, err := os.Open(name)
-	if err != nil {
-		return -1, fmt.Errorf("read words could not open: %q: %w", name, err)
-	}
-	defer file.Close()
-	count, err = Words(file)
-	if err != nil {
-		return count, fmt.Errorf("read words failed to count words: %q: %w", name, err)
-	}
-	return count, file.Close()
-}
+package filesystem
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"retrotxt.com/retrotxt/lib/logs"
+)
+
+// IsPipe determines if Stdin (standard input) is piped from another command.
+func IsPipe() bool {
+	// source: https://dev.to/napicella/linux-pipes-in-golang-2e8j
+	fileInfo, err := os.Stdin.Stat()
+	if err != nil {
+		logs.Log(err)
+	}
+	return fileInfo.Mode()&os.ModeCharDevice == 0
+}
+
+// Read opens and returns the content of the named file.
+func Read(name string) ([]byte, error) {
+	return ReadAllBytes(name)
+}
+
+// ReadAllBytes reads the named file and returns the content as a byte array.
+// Create a word and random character generator to make files larger than 64k.
+func ReadAllBytes(name string) (data []byte, err error) {
+	file, err := os.Open(name)
+	if err != nil {
+		return nil, fmt.Errorf("read all bytes could not open file: %q: %w", name, err)
+	}
+	defer file.Close()
+	// bufio is the most performant way to scan streamed data
+	scanner := bufio.NewScanner(file)
+	// optional adjustment to the token size
+	// Go by default will scan 64 * 1024 bytes (64KB) per iteration
+	const max = 64 * 1024
+	scanner.Buffer(data, max)
+	// required, split scan into Buffer(data, x) sized byte chuncks
+	// otherwise scanner will panic on files larger than 64 * 1024 bytes
+	scanner.Split(bufio.ScanBytes)
+	for scanner.Scan() {
+		data = append(data, scanner.Bytes()...)
+	}
+	if err = scanner.Err(); err != nil {
+		return data, fmt.Errorf("read all bytes could not scan file: %q: %w", name, err)
+	}
+	return data, file.Close()
+}
+
+// ReadChunk reads and returns the start of the named file.
+func ReadChunk(name string, chars int) (data []byte, err error) {
+	file, err := os.Open(name)
+	if err != nil {
+		return nil, fmt.Errorf("read chunk could not open file: %q: %w", name, err)
+	}
+	defer file.Close()
+	scanner := bufio.NewScanner(file)
+	scanner.Split(bufio.ScanRunes)
+	count := 0
+	for scanner.Scan() {
+		count++
+		if count > chars {
+			break
+		}
+		data = append(data, scanner.Bytes()...)
+	}
+	if err = scanner.Err(); err != nil {
+		return data, fmt.Errorf("read chunk could not scan file: %q: %w", name, err)
+	}
+	return data, file.Close()
+}
+
+// ReadColumns counts the number of characters used per line in the named file.
+func ReadColumns(name string) (count int, err error) {
+	file, err := os.Open(name)
+	if err != nil {
+		return -1, fmt.Errorf("read columns could not open file: %q: %w", name, err)
+	}
+	defer file.Close()
+	nl, err := ReadNewlines(name)
+	if err != nil {
+		return -1, fmt.Errorf("read columns could not find the newline method: %w", err)
+	}
+	count, err = Columns(file, nl)
+	if err != nil {
+		return -1, fmt.Errorf("read columns count the file: %q: %w", name, err)
+	}
+	return count, file.Close()
+}
+
+// ReadControls counts the number of ANSI escape sequences in the named file.
+func ReadControls(name string) (count int, err error) {
+	file, err := os.Open(name)
+	if err != nil {
+		return -1, fmt.Errorf("read countrols could not open file: %q: %w", name, err)
+	}
+	defer file.Close()
+	count, err = Controls(file)
+	if err != nil {
+		return -1, fmt.Errorf("read countrols could not parse the file: %q: %w", name, err)
+	}
+	return count, file.Close()
+}
+
+// ReadLine reads a named file location or a named temporary file and returns its content.
+func ReadLine(name, newline string) (text string, err error) {
+	var path, n = tempFile(name), nl(newline)
+	file, err := os.OpenFile(path, os.O_RDONLY, filemode)
+	if err != nil {
+		return text, fmt.Errorf("read line could not open file: %q: %w", name, err)
+	}
+	defer file.Close()
+	// bufio is the most performant
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		text += fmt.Sprintf("%s%s", scanner.Text(), n)
+	}
+	if err = scanner.Err(); err != nil {
+		return text, fmt.Errorf("read line could not scan file: %w", err)
+	}
+	return text, file.Close()
+}
+
+// ReadLines counts the number of lines in the named file.
+func ReadLines(name string) (count int, err error) {
+	file, err := os.Open(name)
+	if err != nil {
+		return -1, fmt.Errorf("read lines could not open file: %q: %w", name, err)
+	}
+	defer file.Close()
+	nl, err := ReadNewlines(name)
+	if err != nil {
+		return -1, fmt.Errorf("read lines could not scan the file: %w", err)
+	}
+	count, err = Lines(file, nl)
+	if err != nil {
+		return -1, fmt.Errorf("read tail could not open file: %q: %w", name, err)
+	}
+	return count, file.Close()
+}
+
+// ReadNewlines scans the named file for the most commonly used newline method.
+func ReadNewlines(name string) ([2]rune, error) {
+	z := [2]rune{0, 0}
+	file, err := os.Open(name)
+	if err != nil {
+		return z, fmt.Errorf("read new lines could not open file: %q: %w", name, err)
+	}
+	defer file.Close()
+	b, err := ioutil.ReadAll(file)
+	if err != nil {
+		return z, fmt.Errorf("read new lines could not read the file: %q: %w", name, err)
+	}
+	return Newlines(true, bytes.Runes(b)...), file.Close()
+}
+
+// ReadPipe reads data piped by the operating system's STDIN.
+// If no data is detected the program will exit.
+func ReadPipe() (b []byte, err error) {
+	scanner := bufio.NewScanner(os.Stdin)
+	for scanner.Scan() {
+		b = append(b, scanner.Bytes()...)
+	}
+	if err = scanner.Err(); err != nil {
+		return b, fmt.Errorf("read pipe could not scan stdin: %w", err)
+	}
+	if len(b) == 0 {
+		os.Exit(0)
+	}
+	return b, nil
+}
+
+// ReadRunes returns the number of runes in the named file.
+func ReadRunes(name string) (count int, err error) {
+	file, err := os.Open(name)
+	if err != nil {
+		return 0, fmt.Errorf("read runes could not open file: %q: %w", name, err)
+	}
+	defer file.Close()
+	count, err = Runes(file)
+	if err != nil {
+		return 0, fmt.Errorf("read runes could not calculate this file: %q: %w", name, err)
+	}
+	return count, file.Close()
+}
+
+// ReadTail reads the named file from the offset position relative to the end of the file.
+func ReadTail(name string, offset int) (data []byte, err error) {
+	file, err := os.Open(name)
+	if err != nil {
+		return data, fmt.Errorf("read tail could not open file: %q: %w", name, err)
+	}
+	defer file.Close()
+	count, total := 0, 0
+	total, err = ReadRunes(name)
+	if err != nil {
+		return data, fmt.Errorf("read tail could not read runes: %q: %w", name, err)
+	}
+	// bufio is the most performant
+	scanner := bufio.NewScanner(file)
+	scanner.Split(bufio.ScanRunes)
+	for scanner.Scan() {
+		count++
+		if count <= (total - offset) {
+			continue
+		}
+		data = append(data, scanner.Bytes()...)
+	}
+	if err = scanner.Err(); err != nil {
+		return data, fmt.Errorf("read tail could scan file bytes: %q: %w", name, err)
+	}
+	return data, file.Close()
+}
+
+// ReadText reads a named file location or a named temporary file and returns its content.
+func ReadText(name string) (text string, err error) {
+	text, err = ReadLine(name, "")
+	if err != nil {
+		return text, fmt.Errorf("read text: %q: %w", name, err)
+	}
+	return text, nil
+}
+
+// ReadWords counts the number of spaced words in the named file.
+func ReadWords(name string) (count int, err error) {
+	file, err := os.Open(name)
+	if err != nil {
+		return -1, fmt.Errorf("read words could not open: %q: %w", name, err)
+	}
+	defer file.Close()
+	count, err = Words(file)
+	if err != nil {
+		return count, fmt.Errorf("read words failed to count words: %q: %w", name, err)
+	}
+	return count, file.Close()
+}
diff --git a/lib/humanize/dates.go b/lib/humanize/dates.go
index 64eb4505..e367a807 100644
--- a/lib/humanize/dates.go
+++ b/lib/humanize/dates.go
@@ -1,89 +1,89 @@
-package humanize
-
-import (
-	"fmt"
-	"strings"
-	"time"
-)
-
-// 2 Jan 15:04 2006.
-const (
-	DMY = "2 Jan 2006"
-	YMD = "2006 Jan 2"
-	MDY = "Jan 2 2006"
-	H12 = "3:04 pm"
-	H24 = "15:04"
-)
-
-// DMY12 12-hour day month year.
-func DMY12() string { return fmt.Sprintf("%s %s", DMY, H12) }
-
-// DMY24 24-hour day month year.
-func DMY24() string { return fmt.Sprintf("%s %s", DMY, H24) }
-
-// YMD12 12-hour year month day.
-func YMD12() string { return fmt.Sprintf("%s %s", YMD, H12) }
-
-// YMD24 24-hour year month day.
-func YMD24() string { return fmt.Sprintf("%s %s", YMD, H24) }
-
-// MDY12 12-hour month day year.
-func MDY12() string { return fmt.Sprintf("%s %s", MDY, H12) }
-
-// MDY24 24-hour month day year.
-func MDY24() string { return fmt.Sprintf("%s %s", MDY, H24) }
-
-// Date returns a formatted date string.
-func Date(format string, t time.Time) string {
-	format = strings.ToUpper(format)
-	if format == "" {
-		format = "DMY"
-	}
-	switch format {
-	case "DMY":
-		return t.Format(DMY)
-	case "YMD":
-		return t.Format(YMD)
-	case "MDY":
-		return t.Format(MDY)
-	}
-	return ""
-}
-
-// Time returns a formatted time string.
-func Time(format string, t time.Time) string {
-	format = strings.ToUpper(format)
-	if format == "" {
-		format = "H24"
-	}
-	switch format {
-	case "H12":
-		return t.Format(H12)
-	case "H24":
-		return t.Format(H24)
-	}
-	return ""
-}
-
-// Datetime returns a formatted date and time string.
-func Datetime(format string, t time.Time) string {
-	format = strings.ToUpper(format)
-	if format == "" {
-		format = "DMY24"
-	}
-	switch format {
-	case "DMY12":
-		return t.Format(DMY12())
-	case "YMD12":
-		return t.Format(YMD12())
-	case "MDY12":
-		return t.Format(MDY12())
-	case "DMY24":
-		return t.Format(DMY24())
-	case "YMD24":
-		return t.Format(YMD24())
-	case "MDY24":
-		return t.Format(MDY24())
-	}
-	return ""
-}
+package humanize
+
+import (
+	"fmt"
+	"strings"
+	"time"
+)
+
+// 2 Jan 15:04 2006.
+const (
+	DMY = "2 Jan 2006"
+	YMD = "2006 Jan 2"
+	MDY = "Jan 2 2006"
+	H12 = "3:04 pm"
+	H24 = "15:04"
+)
+
+// DMY12 12-hour day month year.
+func DMY12() string { return fmt.Sprintf("%s %s", DMY, H12) }
+
+// DMY24 24-hour day month year.
+func DMY24() string { return fmt.Sprintf("%s %s", DMY, H24) }
+
+// YMD12 12-hour year month day.
+func YMD12() string { return fmt.Sprintf("%s %s", YMD, H12) }
+
+// YMD24 24-hour year month day.
+func YMD24() string { return fmt.Sprintf("%s %s", YMD, H24) }
+
+// MDY12 12-hour month day year.
+func MDY12() string { return fmt.Sprintf("%s %s", MDY, H12) }
+
+// MDY24 24-hour month day year.
+func MDY24() string { return fmt.Sprintf("%s %s", MDY, H24) }
+
+// Date returns a formatted date string.
+func Date(format string, t time.Time) string {
+	format = strings.ToUpper(format)
+	if format == "" {
+		format = "DMY"
+	}
+	switch format {
+	case "DMY":
+		return t.Format(DMY)
+	case "YMD":
+		return t.Format(YMD)
+	case "MDY":
+		return t.Format(MDY)
+	}
+	return ""
+}
+
+// Time returns a formatted time string.
+func Time(format string, t time.Time) string {
+	format = strings.ToUpper(format)
+	if format == "" {
+		format = "H24"
+	}
+	switch format {
+	case "H12":
+		return t.Format(H12)
+	case "H24":
+		return t.Format(H24)
+	}
+	return ""
+}
+
+// Datetime returns a formatted date and time string.
+func Datetime(format string, t time.Time) string {
+	format = strings.ToUpper(format)
+	if format == "" {
+		format = "DMY24"
+	}
+	switch format {
+	case "DMY12":
+		return t.Format(DMY12())
+	case "YMD12":
+		return t.Format(YMD12())
+	case "MDY12":
+		return t.Format(MDY12())
+	case "DMY24":
+		return t.Format(DMY24())
+	case "YMD24":
+		return t.Format(YMD24())
+	case "MDY24":
+		return t.Format(MDY24())
+	}
+	return ""
+}
diff --git a/lib/logs/cmd.go b/lib/logs/cmd.go
index 4b315443..319ed2a5 100644
--- a/lib/logs/cmd.go
+++ b/lib/logs/cmd.go
@@ -1,109 +1,109 @@
-package logs
-
-import (
-	"errors"
-	"fmt"
-	"os"
-	"strings"
-)
-
-var (
-	ErrCmd     = errors.New("choose a command from the list available")
-	ErrNewCmd  = errors.New("choose another command from the available commands")
-	ErrNoCmd   = errors.New("invalid command")
-	ErrEmpty   = errors.New("value is empty")
-	ErrFlag    = errors.New("use a flag from the list of flags")
-	ErrSyntax  = errors.New("flags can only be in -s (short) or --long (long) form")
-	ErrNoFlag  = errors.New("cannot be empty and requires a value")
-	ErrReqFlag = errors.New("you must include this flag in your command")
-	ErrSlice   = errors.New("invalid option choice")
-	ErrShort   = errors.New("word count is too short, less than 3")
-	ErrVal     = errors.New("value is not a valid choice")
-)
-
-// Cmd is a command error type to handle command arguments and flags.
-type Cmd struct {
-	Args []string // Command line arguments
-	Err  error    // rootCmd.Execute output
-}
-
-// Execute is the error handler for command flags and arguments.
-func Execute(err error, args ...string) {
-	cmd := Cmd{Args: args, Err: err}
-	fmt.Println(cmd.error().String())
-}
-
-// ArgFatal returns instructions for invalid command arguments.
-func ArgFatal(args ...string) {
-	cmd := Cmd{Args: args, Err: fmt.Errorf("%q: %w", args[0], ErrNoCmd)}
-	fmt.Println(cmd.error().String())
-	os.Exit(1)
-}
-
-// FlagFatal returns flag options when an invalid choice is used.
-func FlagFatal(name, value string, args ...string) {
-	cmd := Cmd{Args: args, Err: fmt.Errorf("--%s=%q: %w", name, value, ErrSlice)}
-	fmt.Println(cmd.error().String())
-	fmt.Printf("         choices: %s\n", strings.Join(args, ", "))
-	os.Exit(1)
-}
-
-func (c Cmd) error() Generic {
-	var (
-		s     = strings.Split(fmt.Sprintf("%s", c.Err), " ")
-		l     = len(s)
-		quote = func(s string) string {
-			return fmt.Sprintf("%q", s)
-		}
-	)
-	const min = 3
-	if l < min {
-		LogFatal(fmt.Errorf("cmd error args: %w", ErrShort))
-	} else if len(c.Args) < 1 {
-		LogFatal(fmt.Errorf("cmd error err: %w", ErrEmpty))
-	}
-	a := fmt.Sprintf("%q", c.Args[0])
-	switch strings.Join(s[0:2], " ") {
-	case "bad flag":
-		return Generic{Issue: "flag syntax",
-			Arg: quote(s[l-1]),
-			Err: ErrSyntax}
-	case "flag needs":
-		return Generic{Issue: "invalid flag",
-			Arg: quote(s[l-1]),
-			Err: ErrNoFlag}
-	case "invalid argument":
-		m := strings.Split(fmt.Sprint(c.Err), ":")
-		return Generic{Issue: "flag value",
-			Arg: a,
-			Err: fmt.Errorf("%s: %w", m[0], ErrNoCmd)}
-	case "invalid slice":
-		return Generic{Issue: "flag value",
-			Arg: quote(s[l-1]),
-			Err: fmt.Errorf("--%s: %w", s[l-2], ErrVal)}
-	case "invalid command":
-		return Generic{Issue: "invalid command",
-			Arg: quote(s[l-1]),
-			Err: ErrNewCmd}
-	case "required flag(s)":
-		return Generic{Issue: "a required flag is missing",
-			Arg: s[2],
-			Err: ErrReqFlag}
-	case "subcommand is":
-		fmt.Printf("SUBCMD DEBUG: %+v", c.Err)
-		return Generic{} // ignore error
-	case "unknown command":
-		return Generic{Issue: "invalid command",
-			Arg: a,
-			Err: ErrCmd}
-	case "unknown flag:":
-		return Generic{Issue: "unknown flag",
-			Arg: s[2],
-			Err: ErrFlag}
-	case "unknown shorthand":
-		return Generic{Issue: "unknown shorthand flag",
-			Arg: s[5],
-			Err: ErrFlag}
-	}
-	return Generic{Issue: "command", Arg: "execute", Err: c.Err}
-}
+package logs
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+)
+
+var (
+	ErrCmd     = errors.New("choose a command from the list available")
+	ErrNewCmd  = errors.New("choose another command from the available commands")
+	ErrNoCmd   = errors.New("invalid command")
+	ErrEmpty   = errors.New("value is empty")
+	ErrFlag    = errors.New("use a flag from the list of flags")
+	ErrSyntax  = errors.New("flags can only be in -s (short) or --long (long) form")
+	ErrNoFlag  = errors.New("cannot be empty and requires a value")
+	ErrReqFlag = errors.New("you must include this flag in your command")
+	ErrSlice   = errors.New("invalid option choice")
+	ErrShort   = errors.New("word count is too short, less than 3")
+	ErrVal     = errors.New("value is not a valid choice")
+)
+
+// Cmd is a command error type to handle command arguments and flags.
+type Cmd struct {
+	Args []string // Command line arguments
+	Err  error    // rootCmd.Execute output
+}
+
+// Execute is the error handler for command flags and arguments.
+func Execute(err error, args ...string) {
+	cmd := Cmd{Args: args, Err: err}
+	fmt.Println(cmd.error().String())
+}
+
+// ArgFatal returns instructions for invalid command arguments.
+func ArgFatal(args ...string) {
+	cmd := Cmd{Args: args, Err: fmt.Errorf("%q: %w", args[0], ErrNoCmd)}
+	fmt.Println(cmd.error().String())
+	os.Exit(1)
+}
+
+// FlagFatal returns flag options when an invalid choice is used.
+func FlagFatal(name, value string, args ...string) {
+	cmd := Cmd{Args: args, Err: fmt.Errorf("--%s=%q: %w", name, value, ErrSlice)}
+	fmt.Println(cmd.error().String())
+	fmt.Printf("         choices: %s\n", strings.Join(args, ", "))
+	os.Exit(1)
+}
+
+func (c Cmd) error() Generic {
+	var (
+		s     = strings.Split(fmt.Sprintf("%s", c.Err), " ")
+		l     = len(s)
+		quote = func(s string) string {
+			return fmt.Sprintf("%q", s)
+		}
+	)
+	const min = 3
+	if l < min {
+		LogFatal(fmt.Errorf("cmd error args: %w", ErrShort))
+	} else if len(c.Args) < 1 {
+		LogFatal(fmt.Errorf("cmd error err: %w", ErrEmpty))
+	}
+	a := fmt.Sprintf("%q", c.Args[0])
+	switch strings.Join(s[0:2], " ") {
+	case "bad flag":
+		return Generic{Issue: "flag syntax",
+			Arg: quote(s[l-1]),
+			Err: ErrSyntax}
+	case "flag needs":
+		return Generic{Issue: "invalid flag",
+			Arg: quote(s[l-1]),
+			Err: ErrNoFlag}
+	case "invalid argument":
+		m := strings.Split(fmt.Sprint(c.Err), ":")
+		return Generic{Issue: "flag value",
+			Arg: a,
+			Err: fmt.Errorf("%s: %w", m[0], ErrNoCmd)}
+	case "invalid slice":
+		return Generic{Issue: "flag value",
+			Arg: quote(s[l-1]),
+			Err: fmt.Errorf("--%s: %w", s[l-2], ErrVal)}
+	case "invalid command":
+		return Generic{Issue: "invalid command",
+			Arg: quote(s[l-1]),
+			Err: ErrNewCmd}
+	case "required flag(s)":
+		return Generic{Issue: "a required flag is missing",
+			Arg: s[2],
+			Err: ErrReqFlag}
+	case "subcommand is":
+		fmt.Printf("SUBCMD DEBUG: %+v", c.Err)
+		return Generic{} // ignore error
+	case "unknown command":
+		return Generic{Issue: "invalid command",
+			Arg: a,
+			Err: ErrCmd}
+	case "unknown flag:":
+		return Generic{Issue: "unknown flag",
+			Arg: s[2],
+			Err: ErrFlag}
+	case "unknown shorthand":
+		return Generic{Issue: "unknown shorthand flag",
+			Arg: s[5],
+			Err: ErrFlag}
+	}
+	return Generic{Issue: "command", Arg: "execute", Err: c.Err}
+}
diff --git a/lib/prompt/prompt_test.go b/lib/prompt/prompt_test.go
index f02a8121..bab6d667 100644
--- a/lib/prompt/prompt_test.go
+++ b/lib/prompt/prompt_test.go
@@ -1,182 +1,182 @@
-package prompt
-
-import (
-	"bytes"
-	"testing"
-)
-
-func Test_pport(t *testing.T) {
-	var stdin bytes.Buffer
-	tests := []struct {
-		name     string
-		validate bool
-		input    string
-		wantPort uint
-	}{
-		{"empty", false, "", 0},
-		{"empty validate", true, "", 0},
-		{"no validation", false, "8000", 8000},
-		{"validation", true, "8000", 8000},
-		{"invalid 1", false, "90000", 90000},
-		{"invalid 2", false, "abcde", 0},
-		{"invalid 3", true, "90000", 0},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			stdin.Write([]byte(tt.input + "\n")) // \n is a requirement
-			if gotPort := pport(&stdin, tt.validate, false); gotPort != tt.wantPort {
-				t.Errorf("pport() = %v, want %v", gotPort, tt.wantPort)
-			}
-		})
-	}
-}
-
-func TestPortValid(t *testing.T) {
-	tests := []struct {
-		name   string
-		port   uint
-		wantOk bool
-	}{
-		{"0", 0, true},
-		{"80", 80, true},
-		{"8080", 8080, true},
-		{"8888", 8888, true},
-		{"88888", 88888, false},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if gotOk := PortValid(tt.port); gotOk != tt.wantOk {
-				t.Errorf("PortValid() = %v, want %v", gotOk, tt.wantOk)
-			}
-		})
-	}
-}
-
-func Test_keys_validate(t *testing.T) {
-	var opt keys = []string{"hello", "world", "hi"}
-	tests := []struct {
-		name   string
-		k      keys
-		key    string
-		wantOk bool
-	}{
-		{"empty", keys{}, "", false},
-		{"no input", opt, "", false},
-		{"wrong", opt, "someinput", false},
-		{"ok 1", opt, "hi", true},
-		{"ok 2", opt, "world", true},
-		{"only one choice", opt, "hello world", false},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if gotOk := tt.k.validate(tt.key); gotOk != tt.wantOk {
-				t.Errorf("keys.validate() = %v, want %v", gotOk, tt.wantOk)
-			}
-		})
-	}
-}
-
-func Test_keys_prompt(t *testing.T) {
-	var opt keys = []string{"hello", "world", "hi"}
-	var stdin bytes.Buffer
-	tests := []struct {
-		name    string
-		k       keys
-		input   string
-		wantKey string
-	}{
-		{"empty", keys{}, "", ""},
-		{"no input", opt, "", ""},
-		{"wrong", opt, "blahblah", ""},
-		{"ok 1", opt, "hi", "hi"},
-		{"ok 2", opt, "hello", "hello"},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			stdin.Write([]byte(tt.input + "\n")) // \n is a requirement
-			if gotKey := tt.k.prompt(&stdin, false); gotKey != tt.wantKey {
-				t.Errorf("keys.prompt() = %v, want %v", gotKey, tt.wantKey)
-			}
-		})
-	}
-}
-
-func Test_promptRead(t *testing.T) {
-	var stdin bytes.Buffer
-	tests := []struct {
-		name      string
-		input     string
-		wantInput string
-		wantErr   bool
-	}{
-		{"empty", "", "", false},
-		{"nl", "\n", "", false},
-		{"tab", "\t", "", false},
-		{"hi", "hello", "hello", false},
-		{"hw", "hello world", "hello world", false},
-		{"emoji", "hi 😃", "hi 😃", false},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			stdin.Write([]byte(tt.input + "\n")) // \n is a requirement
-			gotInput, err := promptRead(&stdin)
-			if (err != nil) != tt.wantErr {
-				t.Errorf("promptRead() error = %v, wantErr %v", err, tt.wantErr)
-				return
-			}
-			if gotInput != tt.wantInput {
-				t.Errorf("promptRead() = %v, want %v", gotInput, tt.wantInput)
-			}
-		})
-	}
-}
-
-func Test_parseYN(t *testing.T) {
-	type args struct {
-		input      string
-		yesDefault bool
-	}
-	tests := []struct {
-		name string
-		args args
-		want bool
-	}{
-		{"empty", args{}, false},
-		{"yes 1", args{"", true}, true},
-		{"yes 1", args{"y", false}, true},
-		{"yes 2", args{"yes", false}, true},
-		{"no 1", args{"no", false}, false},
-		{"no 2", args{"no", true}, false},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if got := parseYN(tt.args.input, tt.args.yesDefault); got != tt.want {
-				t.Errorf("parseYN() = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}
-
-func Test_keys_shortValidate(t *testing.T) {
-	fruits := []string{"Apple", "Watermelon", "Orange", "Pear", "Cherry"}
-	tests := []struct {
-		name string
-		k    keys // should be unique
-		key  string
-		want string
-	}{
-		{"empty", keys{""}, "", ""},
-		{"match l1", keys{"hi"}, "hi", "hi"},
-		{"match s1", keys{"hi"}, "h", "hi"},
-		{"match fullname fruit", fruits, "Orange", "Orange"},
-		{"match letter of fruit", fruits, "o", "Orange"},
-		{"mismatch letter of fruit", fruits, "z", ""},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if got := tt.k.shortValidate(tt.key); got != tt.want {
-				t.Errorf("keys.shortValidate(%s) = %v, want %v", tt.key, got, tt.want)
-			}
-		})
-	}
-}
+package prompt
+
+import (
+	"bytes"
+	"testing"
+)
+
+func Test_pport(t *testing.T) {
+	var stdin bytes.Buffer
+	tests := []struct {
+		name     string
+		validate bool
+		input    string
+		wantPort uint
+	}{
+		{"empty", false, "", 0},
+		{"empty validate", true, "", 0},
+		{"no validation", false, "8000", 8000},
+		{"validation", true, "8000", 8000},
+		{"invalid 1", false, "90000", 90000},
+		{"invalid 2", false, "abcde", 0},
+		{"invalid 3", true, "90000", 0},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			stdin.Write([]byte(tt.input + "\n")) // \n is a requirement
+			if gotPort := pport(&stdin, tt.validate, false); gotPort != tt.wantPort {
+				t.Errorf("pport() = %v, want %v", gotPort, tt.wantPort)
+			}
+		})
+	}
+}
+
+func TestPortValid(t *testing.T) {
+	tests := []struct {
+		name   string
+		port   uint
+		wantOk bool
+	}{
+		{"0", 0, true},
+		{"80", 80, true},
+		{"8080", 8080, true},
+		{"8888", 8888, true},
+		{"88888", 88888, false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if gotOk := PortValid(tt.port); gotOk != tt.wantOk {
+				t.Errorf("PortValid() = %v, want %v", gotOk, tt.wantOk)
+			}
+		})
+	}
+}
+
+func Test_keys_validate(t *testing.T) {
+	var opt keys = []string{"hello", "world", "hi"}
+	tests := []struct {
+		name   string
+		k      keys
+		key    string
+		wantOk bool
+	}{
+		{"empty", keys{}, "", false},
+		{"no input", opt, "", false},
+		{"wrong", opt, "someinput", false},
+		{"ok 1", opt, "hi", true},
+		{"ok 2", opt, "world", true},
+		{"only one choice", opt, "hello world", false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if gotOk := tt.k.validate(tt.key); gotOk != tt.wantOk {
+				t.Errorf("keys.validate() = %v, want %v", gotOk, tt.wantOk)
+			}
+		})
+	}
+}
+
+func Test_keys_prompt(t *testing.T) {
+	var opt keys = []string{"hello", "world", "hi"}
+	var stdin bytes.Buffer
+	tests := []struct {
+		name    string
+		k       keys
+		input   string
+		wantKey string
+	}{
+		{"empty", keys{}, "", ""},
+		{"no input", opt, "", ""},
+		{"wrong", opt, "blahblah", ""},
+		{"ok 1", opt, "hi", "hi"},
+		{"ok 2", opt, "hello", "hello"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			stdin.Write([]byte(tt.input + "\n")) // \n is a requirement
+			if gotKey := tt.k.prompt(&stdin, false); gotKey != tt.wantKey {
+				t.Errorf("keys.prompt() = %v, want %v", gotKey, tt.wantKey)
+			}
+		})
+	}
+}
+
+func Test_promptRead(t *testing.T) {
+	var stdin bytes.Buffer
+	tests := []struct {
+		name      string
+		input     string
+		wantInput string
+		wantErr   bool
+	}{
+		{"empty", "", "", false},
+		{"nl", "\n", "", false},
+		{"tab", "\t", "", false},
+		{"hi", "hello", "hello", false},
+		{"hw", "hello world", "hello world", false},
+		{"emoji", "hi 😃", "hi 😃", false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			stdin.Write([]byte(tt.input + "\n")) // \n is a requirement
+			gotInput, err := promptRead(&stdin)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("promptRead() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if gotInput != tt.wantInput {
+				t.Errorf("promptRead() = %v, want %v", gotInput, tt.wantInput)
+			}
+		})
+	}
+}
+
+func Test_parseYN(t *testing.T) {
+	type args struct {
+		input      string
+		yesDefault bool
+	}
+	tests := []struct {
+		name string
+		args args
+		want bool
+	}{
+		{"empty", args{}, false},
+		{"yes 1", args{"", true}, true},
+		{"yes 1", args{"y", false}, true},
+		{"yes 2", args{"yes", false}, true},
+		{"no 1", args{"no", false}, false},
+		{"no 2", args{"no", true}, false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := parseYN(tt.args.input, tt.args.yesDefault); got != tt.want {
+				t.Errorf("parseYN() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func Test_keys_shortValidate(t *testing.T) {
+	fruits := []string{"Apple", "Watermelon", "Orange", "Pear", "Cherry"}
+	tests := []struct {
+		name string
+		k    keys // should be unique
+		key  string
+		want string
+	}{
+		{"empty", keys{""}, "", ""},
+		{"match l1", keys{"hi"}, "hi", "hi"},
+		{"match s1", keys{"hi"}, "h", "hi"},
+		{"match fullname fruit", fruits, "Orange", "Orange"},
+		{"match letter of fruit", fruits, "o", "Orange"},
+		{"mismatch letter of fruit", fruits, "z", ""},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := tt.k.shortValidate(tt.key); got != tt.want {
+				t.Errorf("keys.shortValidate(%s) = %v, want %v", tt.key, got, tt.want)
+			}
+		})
+	}
+}
diff --git a/lib/version/value.go b/lib/version/value.go
index 26daeec6..529234c0 100644
--- a/lib/version/value.go
+++ b/lib/version/value.go
@@ -5,7 +5,7 @@ package version
 // B holds the build and version information.
 var B = Build{
 	Commit:  "go build",
-	Date:    "2020-08-08T11:23:02+10:00",
+	Date:    "2020-08-08T11:32:41+10:00",
 	Domain:  "retrotxt.com",
-	Version: "0.0.22",
+	Version: "0.0.23",
 }