Function            initkeyvars - setup internal keyboard settings

  Syntax              void initkeyvars(void);

  Prototype in        keyboard.h

  Remarks             used to initialize internal variables used by
                      several keyboard functions. The following variable
                      assignments are made:

                           _cursorinsert = CURSOR_HALFBLOCK;
                           _cursoroverwrite = CURSOR_UNDERBAR;

  Return value        nothing.

  See also            getget()