Posted by LordOfBikes on
URL: https://forum.librecad.org/Hello-from-London-tp5723625p5723628.html

Welcome Charles!

There is a tutorial in our old wiki:
https://wiki.librecad.org/index.php?title=Pseudo-Scripting_With_Excel

It uses Excel to create a valid command file, which can be exported in the LibreCAD command line menu.
The command line menu is the button on the right side of the command line.

In your case, create a sheet with the center coordinates, and on a second page create the formulas to create the rectangles from the center coordinates.
Copy/paste the values to the command line or save them in a text file to read in with the command line menu.

Armin