Select items on the quickbar multiple times to get different items, e.g. yellow belt -> red belt -> blue belt. Also, for space exploration mod, automatically swap out the quick bar when entering/leaving space (can be disabled in settings).
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
e.g., select yellow belts on the quickbar, then hit the same key again to select red belts, and a third time for blue belts.
Change settings with the /qic command (press "~" to open the console).
Also, for space exploration mod, automatically swap out the quick bar when entering/leaving space (can be disabled in settings).