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#define CHANGE_POSITION_ROOT ((change_position)0)#define CHANGE_POSITION_BOTTOM ((change_position)1)
#define CHANGE_POSITION_ROOT ((change_position)0)
#define CHANGE_POSITION_BOTTOM ((change_position)1)
#define CHANGE_POSITION_ROOT ((changepos)0)#define CHANGE_POSITION_BOTTOM ((changepos)1)
#define CHANGE_POSITION_ROOT ((changepos)0)
#define CHANGE_POSITION_BOTTOM ((changepos)1)