CHDK developers put additional things there almost every time a new feature is added.
Can you still explain how to do it?
Well, I already pointed you to the source code and I really don't want to explain all of that.
To add a variable so that it gets saved in the SD card config files, I believe that you only need two changes.
Add the new variable to the end of :
- the Conf structure definition in include/conf.h
- one of conf_info[ ], osd_conf_info[ ], gps_conf_info[ ] or user_menu_conf_info[ ] structures using the supplied CONF_INFO macro
After that, you can reference your new variable as a member of the conf structure.
I didn't test this and the forum is kind of quiet right now so I''m not sure if anyone else will catch something I missed or not.