ref: 0ed8a3bd7b1bbe2a3857f2abcaabdc4edd2d8b05 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); }