ref: a0b7b3ecbbcf24a3c79ac91f8fbf6d5c0ddd7710 dir: /sys/src/cmd/plot/libplot/erase.c/
#include "mplot.h" void erase(void){ m_swapbuf(); m_clrwin(clipminx, clipminy, clipmaxx, clipmaxy, e1->backgr); }