j sigren - 2018-02-14

(Doxygen 1.8.14) I created a new page in which I want to include an alphebetized list of functions/enum/structs of a C library, similar to libusb API page http://libusb.sourceforge.net/api-1.0/api.html). I can't figure out how to do this; so far I can only link to the header file reference.
Do I need to modify a doxyfile setting? I tried adding a new tab in doxygenlayout.xml, with visible ="$ALPHABETICAL_INDEX", but that doesn't generate anything in the output of th new page - do I need to also add a special command in the header file in the \page comment block?
Thanks in advance.