Edit the page User macros supported by location
Scope (from the discussion in ZBX-15570): I think the idea to create a table is the right one. If I may I would also suggest in the new version a third column named "Whole field" or similar, where all macros that have to fill the field would have a "yes" or "+". The footnote can stay explaining the idea of needing to fill the whole field, but I would link to it only from the column title, and remove all the superscript links from individual location names.

Perhaps better naming for that third column would be "Combine with text", which expresses a feature (ability to combine the macro with text) rather than a limitation like "Whole field".