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5.9.4 Values

A Value behaves like a Constant, but it can be changed. TO is a parsing word that changes a Values. In Gforth (not in ANS Forth) you can access (and change) a value also with >body.

Here are some examples:

     12 Value APPLES     \ Define APPLES with an initial value of 12
     34 TO APPLES        \ Change the value of APPLES. TO is a parsing word
     1 ' APPLES >body +! \ Increment APPLES.  Non-standard usage.
     APPLES              \ puts 35 on the top of the stack.

Value       w "name" –         core-ext       “Value”

TO       c|w|d|r "name" –         core-ext,local       “TO”