18 = major version 1 = minor version 427 = build number, where 1xx = alpha build (101 = alpha 1, 102 = alpha 2, and so on) 2xx = beta build (201 = beta 1, and so on) 3xx = release candidate build (301 = RC1 and so on) 400 = FCS release 4xx = increment by 1 for each alpha/beta/release build of post-FCS patch or small-enhancement release 19687 = Build number generated by Visual Studio
1 = minor version
427 = build number, where
1xx = alpha build (101 = alpha 1, 102 = alpha 2, and so on)
2xx = beta build (201 = beta 1, and so on)
3xx = release candidate build (301 = RC1 and so on)
400 = FCS release
4xx = increment by 1 for each alpha/beta/release build of post-FCS patch or small-enhancement release
19687 = Build number generated by Visual Studio