The PDF "ExtremeXOS 15.5 User Guide (Full PDF Portfolio)" on http://www.extremenetworks.com/support/documentation/
opens and says that you have to open it in Adobe Acrobat or Reader? Doesn't PDF mean Portable Document Format?
I don't want to install Adobe Acrobat or Adobe Reader because I don't like them. But now I'm being forced to install one in order to read the documentation using a file format that is suppose to allow me to choose any reader I want. I keep sitting here asking myself how badly do I want to read the documentation telling myself that I have no choice. What if I wanted to read this on an iPad?
I don't know what non-portable things are in that document but I strongly encourage Extreme to reconsider the practice of making non-portable documentation.