Built-in Structure Reference
The following structures are built-in to Igor.
These symbols are used to specify array sizes in the structure definitions:
Constant MAX_OBJ_NAME 255
Constant MAX_WIN_PATH 400
Constant MAX_UNITS 49
Constant MAXCMDLEN 2500
Prior to Igor Pro 8.00, MAX_OBJ_NAME was 31, MAX_WIN_PATH was 200, and MAXCMDLEN was 1000.