ref: 4bc63cf817b5dc2b6c3d8ac4dfd9d76a31b3acdc dir: /sys/src/cmd/plot/libplot/erase.c/
#include "mplot.h" void erase(void){ m_swapbuf(); m_clrwin(clipminx, clipminy, clipmaxx, clipmaxy, e1->backgr); }