diff --git a/editions/tw5.com/tiddlers/Saving on Browser with TiddlyStow.tid b/editions/tw5.com/tiddlers/Saving on Browser with TiddlyStow.tid
index 870936ffc..5823ca30d 100644
--- a/editions/tw5.com/tiddlers/Saving on Browser with TiddlyStow.tid	
+++ b/editions/tw5.com/tiddlers/Saving on Browser with TiddlyStow.tid	
@@ -1,4 +1,4 @@
-caption: TiddlyStow (experimental)
+caption: ~TiddlyStow (experimental)
 color: #FF8A65
 created: 20230403170650008
 delivery: Saver
@@ -13,4 +13,4 @@ url: https://github.com/btheado/tiddlystow
 ''Link:'' {{!!url}}
 
 Tiddlystow saves TiddlyWiki files locally using the browser file system API (Chrome-based browsers currently). 
-This is a simple web page for loading a local TiddlyWiki file and storing it back to the same local file requiring no plugins or extensions.
\ No newline at end of file
+This is a simple web page for loading a local TiddlyWiki file and storing it back to the same local file requiring no plugins or extensions.
diff --git a/editions/tw5.com/tiddlers/filters/substitute Operator.tid b/editions/tw5.com/tiddlers/filters/substitute Operator.tid
index 85da915da..c7f98384e 100644
--- a/editions/tw5.com/tiddlers/filters/substitute Operator.tid	
+++ b/editions/tw5.com/tiddlers/filters/substitute Operator.tid	
@@ -18,9 +18,9 @@ The <<.op substitute>> operator replaces any placeholders in the input titles in
 # variables
 
 |placeholder syntax|description|h
-|`$n$`|Text substitution of a parameter provided to the operator, where n is the position of the parameter starting with 1 for the first parameter. Unmatched placeholders pass through unchanged.|
-|`$(varname)$`|Text substitution of a variable. Undefined variables are replaced with an empty string.|
-|`${ filter expression }$`|Text substitution with the first result of evaluating the filter expression.  |
+|`$n$`|Text substitution of a parameter provided to the operator, where n is the position of the parameter starting with 1 for the first parameter. Unmatched placeholders pass through unchanged. |
+|`$(varname)$`|Text substitution of a variable. Undefined variables are replaced with an empty string. |
+|`${ filter expression }$`|Text substitution of the first result of evaluating a filter expression. In other words, if the filter returns multiple titles only the first one will be used. |
 
 <<.tip """Placeholders that contain square bracket characters are not valid filter syntax when used directly in a filter expression. However they can be provided as input to the <$macrocall $name=".op" _="substitute"/> operator as text references or variables""">>