-/**
- * Initialize the default FlightGear properties.
- *
- * These are mostly properties that haven't been claimed by a
- * specific module yet. This function should be invoked once,
- * while the program is starting (and after the global property
- * tree has been created).
- */
-extern void fgInitProps (); // fixme: how are they untied?
-
-
-/**
- * Update the default FlightGear properties.
- *
- * This function should be invoked once in each loop to update all
- * of the default properties.
- */
-extern void fgUpdateProps ();