Hi garagebay9,
This part is unfortunately not documented. The Blender Keymap manager is a very special hell anyways, where even Blender developers are partially lost with. But Tweak is usually simply a mouse action. To move the time marker for example.
Here you can find some advice at Blender Artists: https://blenderartists.org/t/how-to-get-3ds-max-shortcuts-in-blender-2-8/1136913
Kind regards
Reiner
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