[DOCS] Make it more obvious that $:/DefaultTiddlers setting can handle filter-expressions (#8729)

* [DOCS] Make it more obvious that $:/DefaultTiddlers setting can handle filter-expressions

* update with requested changes.

* [DOCS] Make it more obvious that $:/DefaultTiddlers setting can handle filter-expressions

* Refactor text according to feedback

* Create link to DefaultTiddlers system tiddler

Author: pmario

editions/tw5.com/tiddlers/concepts/DefaultTiddlers.tid

@@ -4,9 +4,14 @@ tags: Concepts
 title: DefaultTiddlers
 type: text/vnd.tiddlywiki
 
-"Default tiddlers" refers to the list of tiddlers that is opened at startup in the browser if the address bar does not include a [[permalink|PermaLinks]]).
+"Default tiddlers" refers to the list of tiddlers that are opened at startup in the browser if the address bar does not include a [[permalink|PermaLinks]].
 
-At startup, the text of the system tiddler [[$:/DefaultTiddlers]] is retrieved and evaluated as a [[filter expression|Filter Expression]]. The resulting list of titles is then inserted into the [[story river|Story River]].
+There are two ways default tiddlers can be defined:
 
-The [[control panel|$:/ControlPanel]] ''info/basics'' tab includes a text box for direct access to [[$:/DefaultTiddlers]].
+* A [[title-list|Title List]] eg: `TiddlerTitle` and `[[Title with spaces]]`
+* [[Filter expressions|Filter Expression], using filter operators eg: `[tag[HelloThere]]`
+
+The resulting list of titles is then inserted into the [[story river|Story River]].
+
+The [[control panel|$:/ControlPanel]] ''-> Info -> Basics -> Default tiddler'' setting includes a text box for direct access to $:/DefaultTiddlers.