BSZ4
if (strlen(str) >= SCRNW - (2 * BSZ4))
str[SCRNW - (2 * BSZ4) - 1] = '\0';
move(lastline, (2 * BSZ4));
move(lastline + 1, (2 * BSZ4));
move(BSZ4, 0);
move(BSZ4, len);
move(BSZ4, 0);