• Description:
    Externam modules are normal modules, which contains information about external object/library files. Currently global variables, procedures and linked library functions.

  • Global variables:
    Global variables in external files are defined with 'EDEF' keyword, with this syntax: 
      EDEF <variables>

    Syntax is completely same as with DEF. Only don't forget that arrays are derived to pointers.

  • External procedures:
    External procedures are defined in the same was as normal procedures, but leading with 'EPROC' instead of 'PROC'. All arguments and all return types must be defined: 
      EPROC <name>(<args>) [ (<result>) ]

    where <name> is the external procedure name, <args> are fully typed variable names (names are skipped by PowerD), <result> must be the same as in the procedure definition. If you write an external definition of C compiled function, use LPROC instead of EPROC keyword.

  • Linked library functions:
    Linked library functions are defined in same way as external procedures, but leading with 'LPROC' instead of 'EPROC'.