Change htitle to go comments by default

scripts/htitle

@@ -2,6 +2,8 @@
 
 # Produces a centered title in the middle of a horizontal rule of text.
 
+pre='//'
+
 _filter(){
   [[ -n "$1" ]] && return 1
   while IFS= read -ra args; do
@@ -17,7 +19,7 @@ htitle() {
   local -i left=$side
   local -i right=$side
   (( len % 2 == 1 )) && ((right -= 1))
-  echo "# $(echon "$char" "$left") "$str" $(echon "$char" "$right")"
+  echo "$pre $(echon "$char" "$left") "$str" $(echon "$char" "$right")"
 }
 
 htitle "$@"