R2000i2 config.pro option documentation for: DRAWING_FILE_EDITOR            

drawing_file_editor

editor, protab

(drawing)

specifies the default text editor for editing the drawing setup file. if you do not set this variable, the system uses the default editor. if you set the variable to protab, the system uses pro/table. if you set the variable to editor, the system uses the system editor (refer to the option pro_editor_command).