Specifies an alternate external name to be used when referring to
  external subprograms.  Its form is:

  ALIAS:external-name

    external-name  Is a character constant delimited by apostrophes
                   or quotation marks.  The character constant is
                   used as is; the string is not changed to uppercase,
                   nor are blanks removed.

  The ALIAS property overrides the C (and STDCALL) property.  If both
  C and ALIAS are specified for a subprogram, the subprogram is given
  the C calling convention, but not the C naming convention.  It
  instead receives the name given for ALIAS, with no modifications.

  ALIAS cannot be used with internal procedures, and it cannot be
  applied to dummy arguments.

  cDEC$ ATTRIBUTES ALIAS has the same effect as the cDEC$ ALIAS
  directive.