DIO Port write line mask

Hello,

I'm trying to port a legacy DAQ program to DAQmx, and have never used Labview Before. 

I have several DIO Port Writes and all of them use the "Line Mask" Input which is no longer there on the DAQmx. Otherwise I think I understand how DAQmx works.

I have no idea what this program puts in it's Line Mask and don't want to go through the whole thing trying to figure out how to do it from scratch without using line mask. Could someone simply post an equivalent using the DAQmx? Perhaps DAQmx can be packaged in a new .vi to behave like the Legacy one with a line mask?

Thanks