ref: 29bef5a7f30fb237b1e3ea5fac1be2eb1d2cf5cd dir: /sys/src/cmd/plot/libplot/rmove.c/
#include "mplot.h" void rmove(double xx, double yy){ e1->copyx += xx; e1->copyy += yy; move(e1->copyx, e1->copyy); }