Alan,
Do you mean editing the XML file to be picked up by the smart text drop down in v21?
If so, then adding CHR$(13) does seem to work. E.g. line from my SmartTextAliases.xml file
<Alias name="Author" description="Originator's name.">"Your"
+CHR$(13)+ "name"</Alias>
When used in Pro this does add Your and Name on separate lines.
HTH
Nick
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Nick Hall
Mapchester LTD
Manchester
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