Hello all, I'm working on my re-underscoring of GSL. It's been a lot of work, but I really believe it will pay off in the future in terms of being able more easily find methods of interest because with underscores, they look like the things one might find in the manual. It was *really* important with PLplot which has names that are surprisingly cryptic to start. Back to GSL, I wanted a list of methods that contain the "old" structure prefix (SGsl - not sure why I chose that...), are not in a category of old items, and are not simply in the old stucts (#fields, accessors). The following seems to do the job: | nav suspects | nav := SystemNavigation new. suspects := nav allMethodsWithSourceString:'SGsl' matchCase:true. suspects := suspects reject:[ :each | each category = 'public-old' or:[ each classSymbol beginsWith:'SGsl' ] ]. nav browseMessageList:suspects name: 'Methods referencing old GSL structs' autoSelect:'SGsl'. It might be a useful trick for some of you?? HTH. Bill