Yes. I have claimed for some time that BX does not work on Searches. But I have not been able to document it. Are you finding the same thing? Does the version above, with BX only used for SPELL, work?Morris Krok essence@xxxxxxxx This little program marks all the spelling errors as it loops right through a piece of text written in XY4 Dos 4.018, using the XY3-4 keyboard. It was first written for Xy3, but when I replaced the BC XC with BX Q2, the program did not work. Can anyone explain the reason for this quirk. Using BX Q2 is suppose to be an improvement on the BC approach as it avoids the command line. BC seb /^/XC GTBC se .WA .XC > NW CL BX spellQ2 ES GT CL @NW BF BD BD # Regards, HarryFurthermore what is the command in Xy4 that saves the command line and which can be inserted in a program.> Substitute any s/g number for 02, if you wish. Harry Binswanger hb@xxxxxxxx