Currently Skuid processes Mustache Merge syntax in Action/Button Labels and URLs, but not in Icons. If Skuid did process merge syntax in Icons, then different icons could be rendered depending on URL Parameters, Model data, etc. For example, the following would result in different button icons being displayed depending on whether or not a “fs” parameter exists in the URL query string:
{{^$Param.fs}}ui-silk-arrow-inout{{/$Param.fs}}{{#$Param.fs}}ui-silk-arrow-in{{/$Param.fs}}