Missing doc about the Pattern Data Filter

[speters]

Thx for this fabulous software!

Despite your documentation being excellent in many ways, I could not figure out how to use the "Pattern Data Filter":

ImHex version WerWolv/ImHex@a1edb1b (v1.32.2,
imhex-1.32.2-ArchLinux-x86_64.pkg.tar.zst)

[C3pa]

When I enter some text in the filter, it will filter only the rows that have given string in their name field. Is it really that unintuitive what the filter does so it needs additional explanation in the docs?