For those unfamiliar, #showtooltip is a World of Warcraft macro meta command that sets the icon, tooltip info, cooldown, recast info for the macro button.

@syndemeitri,
The closest you can get in FFXIV is to use these two lines in the macro. The tooltip info doesn't seem possible although it appears to have previously been part of the "/micon" (I could be wrong on that but I don't think I am).
/micon [action name]
/recast [action name]


Wow has a fairly extensive macro syntax and allows you to create macros that are better in combat than simply dragging an ability from your spell book to an action bar, but FFXIV macro syntax is very limited comparatively and FFXIV macros do not work as well in combat (basically macro actions aren't processed the same as regular spell actions resulting in an overall dps/hps loss if overused). That doesn't mean there aren't situations where macros can't be used


For more info on the syntax:
https://ffxiv.consolegameswiki.com/wiki/Macro
https://ffxiv.consolegameswiki.com/wiki/Placeholders
https://ffxiv.consolegameswiki.com/wiki/Text_commands
https://ffxiv.consolegameswiki.com/wiki/Macro_Guides