[Doc]: font and sizing update (#277)

* doc: differnt font for doc

* Update doc/tikzpingus-doc.tex

doc/tikzpingus-doc.tex

@@ -2,7 +2,8 @@
 % Licensed under GNU General Public License version 3
 % https://opensource.org/licenses/gpl-3.0.html
 \errorcontextlines9999
-\documentclass[parskip=half,english,numbers=noenddot,footnotes=nomultiple,oneside]{scrartcl}
+\documentclass[parskip=half,english,numbers=noenddot,footnotes=nomultiple,oneside,fontsize=10pt,DIV=14]{scrartcl}
+% 
 
 \usepackage[T1]{fontenc}
 \usepackage[utf8]{inputenc}
@@ -24,8 +25,9 @@
 
 \usepackage[hyper]{listings}
 \usepackage[skins,breakable,hooks,xparse,listingsutf8,external]{tcolorbox}
-\usepackage{lmodern}
-\usepackage{CrimsonPro}
+\usepackage[sfdefault,scale=.9]{FiraSans}
+% fitting math font
+\usepackage{newtxsf}
 
 \usepackage{imakeidx}
 \usepackage{tikz}
@@ -216,8 +218,8 @@
 \def\@toggle@showcase{\ifx\@showcase@cur\@showcase@pre\global\let\@showcase@cur\@empty\else \global\let\@showcase@cur\@showcase@pre\fi}
 \newcommand\ShowcaseThis[2][]{\ifx\@showcase@cur\@showcase@pre \global\let\@showcase@cur\@empty\expandafter\gpreto\else \global\let\@showcase@cur\@showcase@pre\expandafter\gappto\fi\pengu@all@showcases{{#2=#1},}}
 
-\RedeclareSectionCommand[runin=false,afterskip=-2mm]{section}
-\RedeclareSectionCommand[runin=false,afterskip=-2mm]{subsection}
+\RedeclareSectionCommand[runin=false,beforeskip=3mm,afterskip=-2mm]{section}
+\RedeclareSectionCommand[runin=false,beforeskip=3mm,afterskip=-2mm]{subsection}
 \RedeclareSectionCommand[runin=false,beforeskip=2mm,afterskip=-2mm]{subsubsection}
 
 \tcbset{%
@@ -439,7 +441,7 @@
 	 \node[above=3mm,font=\bfseries\sffamily\Large] at(current bounding box.north) {Motivation};
 \end{tikzpicture}\vspace*{-\baselineskip}
 \end{center}
-\footnotetext{Why \say{pingu} and not \say{pengu}? Well, this is the third try on achieving cute penguins without using any templates or vector formats as a basis. As a German, the short form \say{pingu} was merely a typo that originated from the German word \say{pinguin} for \say{penguin}. It somewhat stuck\ldots}
+\footnotetext{Why \say{pingu} and not \say{pengu}? Well, this is the third try on achieving cute penguins without using any templates or vector formats as a basis. As a German, the short form \say{pingu} was merely a typo that originated from the German word \say{pinguin} for \say{penguin}. It somewhat stuck\ldots{}}
 \endgroup\vfill
 
 \begin{center}
@@ -539,6 +541,7 @@ \section{Usage}\label{Usage}
 
 \begin{commandexplain}{pingu}{\opt{penguin keys}}
 	The command to draw the penguin!
+	If you want to use |\pengu| instead, you can use |\let\pengu\pingu| in your preamble to create an alias.
 \end{commandexplain}
 
 \clearpage Besides the keys defined by this package, you can use the keys of \TikZ\ and |pgf| as well (the duck was generated by the lovely \href{https://github.com/samcarter/tikzducks}{tikzducks} package):
@@ -623,8 +626,8 @@ \subsection{Using the Coordinates}
 This view excluded a lot of special data collected on the wings!
 While there is more information stored for each wing, the following five coordinates are the most important to place items into penguins hand:\vspace*{-1.5em}
 \begin{center}
-	\null\hfill\parbox[c]{2.5\wd\pinguwingright}{\scalebox{2.5}{\usebox\pinguwingright}}\hfill\parbox[c]{4cm}{\centering\small\@declaredcolor{gray}\sffamily And yes, the wings are deliberately placed asymmetrical.\endgraf}\hfill
-	\parbox[c]{2.5\wd\pinguwingleft}{\scalebox{2.5}{\usebox\pinguwingleft}}\hfill\null
+	\null\hfill\parbox[c]{2.6\wd\pinguwingright}{\scalebox{2.5}{\usebox\pinguwingright}}\hfill\parbox[c]{3.5cm}{\centering\small\@declaredcolor{gray}\sffamily And yes, the wings are deliberately placed asymmetrical.\endgraf}\hfill
+	\parbox[c]{2.6\wd\pinguwingleft}{\scalebox{2.5}{\usebox\pinguwingleft}}\hfill\null
 \end{center}
 
 \paragraph{The Body} Similarly to the wing position, different