Gap Calculator: https://openttdcoop.github.io/gap/OpenTTDCoop Wiki on Sync: https://wiki.openttdcoop.org/Line_syncXeryusTC's 2010 blog post: https://blog.openttdcoop.org/2010/07/...Osai's 2007 blog post: http://blog.openttdcoop.org/2007/11/2...