The file is called .projectrc and is kept in the project directory, where the INCOMING directory for this project is kept as well. A typical file might look like this :
#Image 3.01 #defaults for gels of project "abitest" # #Author: F Wobus #Email: (email@example.com) # geltype = ARG imageformat = dat lanenumber = 29 markerrepeat = 7 . . .
This file shouldn't be edited as it can easily modified in the defaults editor.