Programmatically determining how two parts can interact

[Mark Elwin]

Hello, I have a software friend who would like to process pairs of LDraw files and determine how they may interact. This is clearly part of the LDraw program, as the user interface allows users to do this; and so I am wondering whether that software is open source or a more experienced administrator could help us understand how to read and interpret the code. Would love any and all help in this direction. We are very excited.