I've used Blender 2.7 for years, but I'm really trying to make an effort to figure out 2.8.

I was trying to randomize my vertices in edit mode; so I searched Preferences > Keymap for the shortcut to do this. Sure enough, it appeared as the following:

enter image description here

But what is tweak?? I'm guessing it's some hidden menu or something?? I've Googled for awhile, and cannot find anything about this.


  • $\begingroup$ I know it is about mouse movement with the left mouse button pressed in this case... but it would be nice to have a better explanation how to handle these parameters. $\endgroup$
    – Jackdaw
    Commented Aug 25, 2019 at 21:32

1 Answer 1


Tweak is for when a mouse button needs to be pressed and held, followed by dragging the mouse. You can find this information in the docs of Blender 2.8.

A good example for this is SHIFT + Right Click. As long as you keep the right mouse button pressed, you can drag the 3D cursor around.

I couldn't find a particular purpose of having transform.vertex_random set to tweak, it doesn't seem to react to mouse drags. Perhaps that's a misconfiguration.

  • $\begingroup$ I had the exact same question as Codesmith. Furthermore, I tried to reassign Randomize to Ctrl Alt R but it just doesn't take. I can execute the command from the menu, but the shortcut does nothing. And it's not assigned to any other operation in Mesh Edit Mode. transform.vertex_random is the correct syntax according to the Info console. This is a mystery. $\endgroup$
    – Mentalist
    Commented Sep 28, 2020 at 7:11

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