Allow easy use of internal and user commands in Internal Associations

[Fla$her]

What should %2 do?

OK. Let it be %1, not %2, which passes the names to a string.
If I click F3 on each file, then new tabs appear in Lister. But when selecting several files and using %1 by pressing Enter, only one tab opens in Lister with a group of these files, between which you have to switch by n/p, which is inconvenient.
I would like to have an analog of a file-by-file treatment for a group, as if F3 was pressed for each file separately.

[petermad]

I would like to have an analog of a file-by-file treatment for a group, as if F3 was pressed for each file separately.

You can (with ***cm_List %1) but only if you right-click on one of the selected files and choose Open. I does not work with Enter or Double-click

[petermad]

then new tabs appear in Lister

Since when does Lister support Tabs (at least out-of-the-box)?

[Fla$her]

I does not work with Enter

Amazing. The menu can take a long time to open, and this process takes several times more time compared to Enter.

at least out-of-the-box

As you may have noticed, I didn't write about the box:

It's about opening in every window or tab (I use tlister).