File: gawk.info,  Node: Extension Future Growth,  Prev: Extension Other Design Decisions,  Up: Extension Design

C.5.4 Room For Future Growth
----------------------------

The API can later be expanded, in at least the following way:

   * 'gawk' passes an "extension id" into the extension when it first
     loads the extension.  The extension then passes this id back to
     'gawk' with each function call.  This mechanism allows 'gawk' to
     identify the extension calling into it, should it need to know.

   Of course, as of this writing, no decisions have been made with
respect to the above.