diff --git a/.nojekyll b/.nojekyll
index 28a2676..e0f02f0 100644
--- a/.nojekyll
+++ b/.nojekyll
@@ -1 +1 @@
-9e40bd63
\ No newline at end of file
+eaa31901
\ No newline at end of file
diff --git a/mod_wrangle.html b/mod_wrangle.html
index 7566543..09abf00 100644
--- a/mod_wrangle.html
+++ b/mod_wrangle.html
@@ -284,6 +284,7 @@ <h2 id="toc-title">On this page</h2>
   <li><a href="#harmonizing-data" id="toc-harmonizing-data" class="nav-link" data-scroll-target="#harmonizing-data">Harmonizing Data</a></li>
   <li><a href="#wrangling-data" id="toc-wrangling-data" class="nav-link" data-scroll-target="#wrangling-data">Wrangling Data</a>
   <ul class="collapse">
+  <li><a href="#uniting-separating-columns" id="toc-uniting-separating-columns" class="nav-link" data-scroll-target="#uniting-separating-columns">Uniting / Separating Columns</a></li>
   <li><a href="#joining-data" id="toc-joining-data" class="nav-link" data-scroll-target="#joining-data">Joining Data</a></li>
   <li><a href="#leveraging-data-shape" id="toc-leveraging-data-shape" class="nav-link" data-scroll-target="#leveraging-data-shape">Leveraging Data Shape</a></li>
   <li><a href="#quality-control" id="toc-quality-control" class="nav-link" data-scroll-target="#quality-control">Quality Control</a></li>
@@ -360,6 +361,9 @@ <h2 class="anchored" data-anchor-id="harmonizing-data">Harmonizing Data</h2>
 </section>
 <section id="wrangling-data" class="level2">
 <h2 class="anchored" data-anchor-id="wrangling-data">Wrangling Data</h2>
+<section id="uniting-separating-columns" class="level3">
+<h3 class="anchored" data-anchor-id="uniting-separating-columns">Uniting / Separating Columns</h3>
+</section>
 <section id="joining-data" class="level3">
 <h3 class="anchored" data-anchor-id="joining-data">Joining Data</h3>
 <p>a.k.a. attaching data by columns</p>
diff --git a/search.json b/search.json
index 011319f..3989267 100644
--- a/search.json
+++ b/search.json
@@ -243,7 +243,7 @@
     "href": "mod_wrangle.html#wrangling-data",
     "title": "Data Harmonization & Wrangling",
     "section": "Wrangling Data",
-    "text": "Wrangling Data\n\nJoining Data\na.k.a. attaching data by columns\n\n\nLeveraging Data Shape\n\n\nQuality Control\n\n\nCustom Functions\n\n\nText Methods\n\n\nRegular Expressions",
+    "text": "Wrangling Data\n\nUniting / Separating Columns\n\n\nJoining Data\na.k.a. attaching data by columns\n\n\nLeveraging Data Shape\n\n\nQuality Control\n\n\nCustom Functions\n\n\nText Methods\n\n\nRegular Expressions",
     "crumbs": [
       "Quantitative Modules",
       "Data Wrangling"
diff --git a/sitemap.xml b/sitemap.xml
index ab22251..fe383fc 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -2,78 +2,78 @@
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
   <url>
     <loc>https://lter.github.io/ssecr/mod_thinking.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/index.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_findings.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_project-mgmt.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_wrangle.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_reproducibility.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_facilitation.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/topic_spatial.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/topic_interactivity.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_logic-models.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_team-sci.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_reports.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_credit.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_spatial.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_data-viz.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_stats.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_version-control.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/CONTRIBUTING.html</loc>
-    <lastmod>2024-03-13T21:39:58.015Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.947Z</lastmod>
   </url>
   <url>
     <loc>https://lter.github.io/ssecr/mod_data-disc.html</loc>
-    <lastmod>2024-03-13T21:39:58.043Z</lastmod>
+    <lastmod>2024-03-20T14:32:58.975Z</lastmod>
   </url>
 </urlset>