Has no special meaning of its own; this action will undo the registration of a default assignment if that key/mouse/modifier combination is one of the default assignments and cause the key press to be propagated through to the tab for processing.

local wezterm = require 'wezterm'

return {
  keys = {
    -- Turn off the default CMD-m Hide action, allowing CMD-m to
    -- be potentially recognized and handled by the tab
    {key="m", mods="CMD", action=wezterm.action.DisableDefaultAssignment},