What I mean is that there is a category of tools which we can call "drawing aid" that could be used while you are using a "drawing" tool:
let´s suppose we are drawing a line and we have to set the "end point" but we forgot the lenght which we like to be the same as that between to points of our plan, then we could select "gauge" (without leaving "line") and have that length, and then automatically get back to "end point" where we were.
This would be despite you´re using keyboard shortcuts or not.
Hope this time makes more sense
