Many of the macros that start with "." (e.g., "<<.warning>>") have been specially installed on
If you import that tiddler to your file, you can then use the <<.warning "...">> and <<.tip "...">> macros.
However, you don't actually *need* those macros to display those symbols,
which are already part of the TiddlyWiki core installation, and can be found here:
$:/core/images/warning and $:/core/images/tip
To display those images without installing the TiddlyWiki documentation edition,
you can transclude them directly into your content by writing:
{{$:/core/images/warning}} or {{$:/core/images/tip}}
enjoy,
-e
It's currently an "experiment", but we hope to transition to it, and away from GoogleGroups, sometime
in the near future.