StreamLine Tools: what is that? tutorial?

Hello what is streamline tools? what is that?

All of the modeling commands in Nvil can be mapped to mouse buttons,  this is called a Stream Line Tool.  Should you have a 5 button mouse, each button can have a different command.

So 1 hotkey to activate a stream line tool,  and then you have the various mouse buttons that are now "hot" and can execute different commands.

Also, nmb = no mouse button, so the tool can be activated with a simple mouse drag without any button active.