How can I write macros that can do calculations

[Moosetracks555]

I have a LowRider3 CNC with a SKR pro v1.2 with a ESP-01S with ESP3D version 3 on it. Everything is working good so far. I want to add a programs / macros for things like Z axis leveling. I want something that will take user inputs and then issue G code commands and then display the results.

For example Z Leveling...
It would want to know the limits of my X axis then it would do a Z axis probe at several places along the X axis and then after it was done it would output something showing how much my Z axis is off at each probe point.

Could such a routine be added to the ESP3d? If so how would you do this? Can you create a JavaScript HTML page that you could upload to the ESP that could do this? Or would this require an external program running on a pc do do something like this?

[luc-github]

it is not yet supported, it is planned: #237, the work is ongoing