How are IHS version numbers assigned, and how are they relevant to Apache?
IHS version numbers are almost always the same as the level of Apache code upon which IHS is based. The exception is IHS 1.3.19, which is based on Apache 1.3.20. Note: Note : IHS version numbers can differ from Apache version numbers. To display the Apache or IHS version number, execute apache -V (Windows) or httpd -V (other platforms).