/* Plotting functions for v8 and v9 systems */
/* This file is an alternative to plot.h */
/* open the plotting output */
#define openpl() printf("o\n")
/* close the plotting output */
#define closepl() printf("cl\n")
/* make sure the page or screen is clear */
#define erase() printf("e\n")
/* plot a point at _x,_y, which becomes current */
#define point(_x,_y) printf("poi %d %d\n", _x,_y)
/* coordinates to be assigned to lower left and upper right
corners of (square) plotting area */
#define range(_x,_y,_X,_Y) printf("ra %d %d %d %d\n", _x,_y,_X,_Y)
/* place text, first letter at current point, which does not change */
#define text(_s) {if(*(_s) == ' ')printf("t \"%s\"\n",_s); else printf("t %s\n", _s); }
/* draw line from current point to _x,_y, which becomes current */
#define vec(_x,_y) printf("v %d %d\n", _x,_y)
/* _x,_y becomes current point */
#define move(_x, _y) printf("m %d %d\n", _x, _y)
/* specify style for drawing lines: "dotted", "solid", "dotdash" */
#define pen(_s) printf("pe %s\n", _s)