MKVAR Make char string into valid variable name. stringout = mkvar(stringin) Replaces everything in s1 that's not a letter or digit with '_' so s2 can be used as variable name or as fieldname in a struct. If necesarry the first position is filled with 'x' rather than '_'. stringout = mkvar(stringin,letter) replaces the first position with the user specified letter. stringout = mkvar(stringin,letter,'add'/'replace') replaces / adds first character, default 'add'. Idea: Howard E. Motteler form http://www.csee.umbc.edu/%7Emotteler/index.html See also: ISLETTER, MKTEX, MKHTML