Wiki confusion

The decription for buffermode 1 vs 2 on the Wiki here HOW-TO:Modify_the_cache#Cache_settings (wiki) makes no sense whatsoever logic would say that 2 buffers more stuff than 1 but one of the descriptions states the opposite. Does anyone know for sure what is going on? Additionally on the same page memorysize or cachemembuffersize implies that it defaults to 0 as default values are usually shown

It says one thing on top “will only cache videos that use internet file paths/sources” then another in the shaded box for 0 “like “2” but additionally also ftp, webdav, etc”

Edit: same problems on advancedsettings page here Advancedsettings.xml#network (wiki)