Well, when many programmers look up something in a reference, they are looking for details about the API (functions&#x2F;modules&#x2F;variables&#x2F;etc), not necessarily a tutorial on how to use those things.  Examples can be good, but usually you are not expecting a full-fledged tutorial.  Reference manuals are usually full of nuts-and-bolts details.  Examples I can think of are O&#x27;Reilly books that have titles that end with &quot;Reference&quot; verses ones that start with &quot;Learning&quot;.