Reply To: how to grep ID5

Mine, for example :D But that's not for beginners or faint-of-heart, though, as it focuses on the limits of what's possible.

There are a few different flavors of GREP, but the differences are quite obscure and you can in general try any 'normal' GREP expression you find anywhere on the web. David gathered a couple of references:

https://creativepro.com/grep

and one of the first mentioned is Peter Kahrel's Shortcut, which especially targets GREP-for-InDesign users and has frequently been called “the best you can buy for a tenner”.