an555 is REALLY OLD. It'l take you a bit of work to get it to compile with
any of the current tools.

------- Advertizing suplement --------------------------------
Try ASPIC with it, it's a lot easier to debug, because it provides more
meaningful error messages an will pop up your editior on the offending
line(s) if your editor supports that feature (eg. Brief, multi-edit,
Winedit, Codewrite, etc.).
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- Don