diff --git a/homepage/knowledge/cat.html b/homepage/knowledge/cat.html
index fd53eda..75405e2 100644
--- a/homepage/knowledge/cat.html
+++ b/homepage/knowledge/cat.html
@@ -19,41 +19,40 @@
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+		window.is_highlight_stylesheet_here = true;
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+		window.is_highlightjs_here = true;
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+
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@@ -61,7 +60,7 @@ window.load_highlighting = function(language){
 </SCRIPT>
 
 <H1>POSIX cat(1) WIP ARTICLE</H1>
-<H3>updated 2021-06-19</H3>
+<H3>updated 2021-06-20</H3>
 <HR ALIGN="left" SIZE="1" WIDTH="25%" />
 <P>
 <CODE>cat</CODE> on a POSIX or otherwise UNIX-like system is a program that exists to concatenate files; to “join” one file at its end to another at its start, and output that resulting file to standard output.