In some documents about the computer, you can see the MB1, MB2, and MB3 shortenings. When writing posts I use LMB, RMB, and MMB.
These shortenings define the mouse buttons.
MB1: (Mouse Button 1) Left Mouse Button
MB2: (Mouse Button 2) Middle Mouse Button
MB3: (Mouse Button 3) Right Mouse Button
In cad-tips.com, I use LMB, MMB, and RMB instead of these shortcuts.
LMB: Left Mouse Button
MMB: Middle Mouse Button
RMB: Right Mouse Button
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