******** fig3.32 **********

	position
	cursor_new( void )
	{
		position p;

		p = CURSOR_SPACE[0].next;
		CURSOR_SPACE[0].next = CURSOR_SPACE[p].next;

		return p;
	}

	void
	cursor_free( position p )
	{
		CURSOR_SPACE[p].next = CURSOR_SPACE[0].next;
		CURSOR_SPACE[0].next = p;
	}