enter_bold_mode
enter_bold_mode = ABSENT_STRING;
|| PRESENT(enter_bold_mode)
ANDMISSING(enter_bold_mode, exit_attribute_mode);
if (enter_bold_mode)
enter_bold_mode = ABSENT_STRING;
TurnOn(A_BOLD, enter_bold_mode);
if (enter_bold_mode)
TurnOn(A_BOLD, enter_bold_mode);
tmodes(enter_bold_mode, exit_attribute_mode, &sc_b_in, &sc_b_out,
CHECK_SGR(6, enter_bold_mode);