https://www.dotnetzone.gr:443/cs/blogs/birbilis/archive/2009/10/23/replacing-multi-line-text-in-visual-studio-solutions.aspxI was editing a Visual C++ project of Flight Sim Labs recently and came across conditional defines of the following form at many of their C++ header files: #if _MSC_VER > 1000 #pragma once #endif That would be obviously faster to parse (taking in mindelCommunityServer 2.1 SP3 (Build: 20423.1)