What is the name of this function?

Good afternoon,

I came across a post describing how to read a file line by line with a single function, but there were no attached VIs and I could not find this function anywhere in labview

Source: http://forums.ni.com/t5/LabVIEW/How-to-read-from-a-file-line-by-line/td-p/479838

Can someone please tell me what the name of the function in the center is?

 Thank you