In a message dated 98-11-15 16:27:39 EST, you write: << I have got a TI-85. I'd like to convert TI-86's programs for my calculator. I often encounter the function "DelVar (...". How I can translate this 86's fonction to my 85 ? >> There is no DelVar function on the 85. however this function deletes a unnecessary variable.. It's an unneeded function.. Just ignore that line in the program.