I disagree with @srg36 and agree with @alexandrabuga about the need to update revision number. I think it’s needed to have all the docs updated once a revision is made. I also agree that it’s a lot of work and sometimes tedious to chase these related docs. An automated updating system can be a huge help. I found this Medical Device Document Control Software Systems called MasterControl Documents (by MasterControl TM). It has the ability to store all documents, revision, approval and prevent using the old/outdated version of the docs. If it works as good as it advertised, I think I could save a lot of time and efforts in organizing and keeping docs up-to-date.