\:CheckOption{jpg} \if:Option \Configure{Picture}{.jpg} \else \Log:Note{for jpg bitmaps of pictures, use the ‘jpg’ command line option.<.ch bitmaps.>} \fi \:CheckOption{gif} \if:Option \Configure{Picture}{.gif} \else \Log:Note{for gif bitmaps of pictures, use the ‘gif’ command line option.<.ch bitmaps.>} \fi