List of UGS Macros and Macro Help

[khturnings]

Many talk about macros and how useful they are - could we use the discussion forum to post macros that people use and ideas for new ones.

For example I have x, y, z axis's and rotary, y and z.
When I use the rotary axis I have to calculate the steps/per mm based on the diameter of the work.
So I would like a macro that allows me to input the diameter, does the calculation of steps/per mm and updates GRBL $100 or $101
Then a second macro that resets $100 or $102 back to standard x, y, z use.

Not sure if this is possible but would be nice if it can.