This patch causes Bricksmith to write comments using the following syntax:
0 // comment
This is the form preferred by the LDraw File Format 1.0 specification for regular comments (http://ldraw.org/Article218.html#lt0). The WRITE meta command formerly used to designate comments performs a display function in the original LDraw program and possibly others (http://ldraw.org/Article218.html#write).
The WRITE and PRINT meta commands are still understood to represent comments when loading files. They can still be created with the "Insert Raw Command" function.