Can this be done with TC?

[jpcv]

I'd like to do something like this with files in one pane

for %%f IN (*.zip) do zip -add "%%f" test.txt

The files selected in one pane will be the set of files.
The command after the "do" could be anyone.

Any Ideas?

[VadiMGP]

Try use %L parameter for creating filelist file and pass this parameter into batch file like this:
for /F %%i in (%1) do @echo %%i

[FRANCISCO J. ARRILLAGA]

The syntax correct will be

for %f IN (*.zip) do zip -add %f test.txt

(at least, I can use this syntax without problem, WHEN I use shift+Intro for execute the command).

The syntax works fine (on my use)

command /c for %f IN (*.zip) do zip -add %f test.txt

where command is your command interpreter (CMD.EXE, COMMAND.COM, etc.).

[jpcv]

THX, I'll try