I was trying to go over the code for the modifiers yesterday. Most of it made clear sense to me. But there were some conditions, mainly the bitwise ones that I have no idea how they work.
Code:
function todayCloseCombo(var dayclosecombo)
{
	//allows optimizer to specify the best combo of days to close by NYSE 4pm
	//bit position 0 = Monday
	//bit position 1 = Tuesday
	//bit position 2 = Wednesday
	//bit position 3 = Thursday
	//bit position 4 = Friday
	//bit position 5 = Sunday
	//given a combination #, the function will determine if we are beyond
	//a combo close time, close all trades if necessary, and return 1
	//if no further trades allowed today

	int dayclosecombobits = dayclosecombo+.5; //truncate to rounded int
	int today = dow() - 1; //Mon is 0
	if (today == 6) today = 5; //bump Sun to 5 (no Sat, keep binary range 0-63)

	if ((dayclosecombobits & (1 << today)) && lhour(ET) >= 16) 
	{
		exitLong("*");
		exitShort("*");
		return 1; //current dow() is in the combo; indicate no further trades
	}
	else return 0; //current dow() not in combo, safe to take new trades
}

The above code will be a great example if you can elaborate.
Code:
int dayclosecombobits = dayclosecombo+.5;

and this
Code:
if ((dayclosecombobits & (1 << today)) && lhour(ET) >= 16)