ref: 9f2f7bc12b6d0f52a3e5bd32b5e3fdf74cdb9561 dir: /sys/src/cmd/plot/libplot/erase.c/
#include "mplot.h" void erase(void){ m_swapbuf(); m_clrwin(clipminx, clipminy, clipmaxx, clipmaxy, e1->backgr); }