Upgraded to 2.8: Question on SiteMaster.cs

Aug 30, 2013 at 5:25 AM
I just updated on of my sites to v2.8 and added the new info to the SiteMaster.master and sitemaster.cs. I noticed the below in the standard theme sitemaster.cs. What is it for and is it necessary?
private static Regex reg = new Regex(@"(?<=[^])\t{2,}|(?<=[>])\s{2,}(?=[<])|(?<=[>])\s{2,11}(?=[<])|(?=[\n])\s{2,}");