ref: 3ac3b2f6703b8d67146eb4c0f2f6ef4eb006ee8c 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); }