Hehe I like reverse polish on my HP, but I wanted to take advantage of
whatever POV already knew how to do... E.g. any function or user created
macro that can return a float will work.   For a while I was considering
making a string parser (a string parser within a parsed-string/sdl!) to
read in the numbers digit by digit and so on, but I thought that'd be a lot
more work than doing this writing a file and reading it back.  Actually
back in college I did write such a parser for a C class but it only
supported the basic +-/x%

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