From Troi Automatisering:
The Text Plug-in is a very powerful tool for dealing efficiently with text in your FileMaker Pro database. It adds XML Parsing, a SumText function which lets you create a dynamic field in FileMaker Pro that concatenates all text from a field in a related file. It also adds combination functions: ANDText (all lines that are the same in 2 text fields) XORText (all lines that are different) NOTText function (all lines that are in the first text field but not in the second). Also get unique lines and words, sort lines, GetLine and more functions.
Combine sets from 2 text fields:
Get all lines that are the same.
Get all lines that differ.
And other combinations.
Get (unique) lines and sort words and lines.
Make a text sum from a related file that even updates without a script.
Parse XML Text.