NCOLS
mvaddch(i, NCOLS, '|');
for (i = 0; i < NCOLS; i++)
mvaddch(NROWS, NCOLS, '+');
for (tp.tp_col = 0; tp.tp_col < NCOLS; tp.tp_col++)
tp.tp_col = ws.ws_col = NCOLS;
static struct pixel buffer[NCOLS][NROWS];
assert(p->tp_col < NCOLS);