Docs fixes

Thanks @pmario

editions/tw5.com/tiddlers/roadmap/RoadMap.tid

@@ -30,7 +30,6 @@ The following additional features are planned or under consideration for impleme
 * Proper use of ARIA roles
 * Simpler upgrading to new core versions
 * Import wizard allowing individual tiddlers to be selected for import
-* Switching to more [[MarkDown-like]] syntax for basic formatting such as headings and lists
 * `[img[url]]` for remote image embedding, and `[ext[url]]` for explicit external links
 * Further WikiText features including block quotes
 * Facebook, Twitter, G+ and LinkedIn widgets

editions/tw5.com/tiddlers/widgets/MacroCallWidget.tid

@@ -15,8 +15,16 @@ For example, a macro called `italicise` that takes a single parameter called `te
 <<italicise "Text to be made into italics">>
 <<italicise text:"Text to be made into italics">>
 <$macrocall $name="italicise" text="Text to be made into italics"/>
+<$macrocall $name="italicise" text={{Title of tiddler containing text to be italicised}}/>
+<$macrocall $name="italicise" text=<<textMaker "Another macro to generate the text to be italicised">>/>
 ```
 
+You can see several examples of the macro call widget within the core:
+
+* Listing module information: [[$:/snippets/modules]]
+* Listing field information: [[$:/snippets/allfields]]
+* Generating `data:` URIs: [[$:/themes/tiddlywiki/starlight/styles.tid]]
+
 ! Content and Attributes
 
 The content of the `<$macrocall>` widget is ignored.