----Original Message---- All I remember from Pascal programs I have seen is that every thing is 1 large program. I/O is from the punched card era and every body handles SETS differently. Did any one ever use TINY Pascal? I remember back in '81 writing a lot of 1802 assembly language for a Discrete Fourier Transform processor (TTL and HC chips) in a sonobuoy project (PC boards 20" long and only 3" wide)... now you just throw in a DSP chip that runs on milliwatts... Anyhow I was very happy when "Micro Concurrent Pascal" came out, so I could write the control program and user-interface routines in a high- level language. Of course it didn't have good checking, as I discovered after chasing an intermittent crash for days with only a scope and logic analyzer. A junior programmer had put a subscript value of 60 in the middle of a group of variables, although the array itself was defined as [1..20]. It wasn't easy to spot by eye even once we had found it. So a location 40 bytes away was being overwritten, and sometimes to a value that would kill the program, sometimes not! -Charles