Stack Comments

Stack Comments are a conventional notation in Forth that specify the arguments that a word expects, and the results it will return. It is usual for a Forth word to consume its arguments. A stack comment looks like this;

   ( a b c--d e)
      

The arguments come before the &quot--", and the results after. In each instance the rightmost item (respectively &quotc" and &quote" in the example), is on the top of the stack. It is usual for stack comments to carry data type information, where it is required (ie n1 would be a signed integer, addr2 would be an address).