Quick question about materials?

What are the differences between making a material definition.j3md vs. a material.j3m I’m a bit unclear here, mainly concerning a few things I have tried with Tera Monkey. My apologies for being new. But was curious as to the differences.


A j3m is a description file that fills parameters of a certain j3md file. The j3md file specifies the shaders and maybe some additional code for checking the graphics environment etc.