



          8.   COMPLIANCE AND LABELING




                            8.   COMPLIANCE AND LABELING


          The FORTH Standards Team hereby specifies the requirements for
          labeling of systems and applications so that the conditions for
          program portability may be established.

          A Standard System may use the specified labeling if it complies
          with the terms of this Standard and meets the particular Word Set
          definitions.

          A Standard Program (application) may use the specified labeling
          if it utilizes the specified Standard System according to this
          Standard and executes equivalently on any such system.

          In a system or application, a standard word may not be redefined
          to perform a different function within the vocabulary FORTH.


          FORTH Standard

          A system may be labeled:

               FORTH-83 Standard

          if it includes all of the Required Word Set in either source or
          object form and complies with the text of this Standard.  After
          executing "FORTH-83" the dictionary must contain all of the
          Required Word Set in the vocabulary FORTH, as specified in this
          Standard.


          Standard Sub-set

          A system may be labeled:

               FORTH-83 Standard Sub-set

          if it includes a portion of the Required Word Set and complies
          with the remaining text of this Standard.  However, no Required
          Word may be present with a non-standard definition.


          Standard with Extensions

          A system may be labeled:

               FORTH-83 Standard with <name> Standard Extension(s)

          if it comprises a FORTH-83 Standard System and one or more
          Standard Extension Word Set(s).  For example, a designation would
          be in the form:



                                         16





          8.   COMPLIANCE AND LABELING


               FORTH-83 Standard with Double-Number Standard Extension


          Standard Program

          A FORTH source program which executes equivalently on any
          Standard System may be labeled:

               FORTH-83 Standard Program

          See:  "equivalent execution"  "7. REQUIREMENTS"


          Standard Program with Environmental Dependencies

          A program which is standard in all ways except for specific
          environmentally dependent words may be labeled:

               FORTH-83 Standard Program with Environmental Dependencies

          if the following additional requirements are met:

               1) Environmental dependencies (including hardware
               dependencies) shall be factored into an isolated set of
               application word definitions.

               2) Each environmentally dependent word definition must be
               fully documented, including all dependencies in a manner at
               least as detailed as the standard words.




























                                         17

