Microsoft Bookshelf 95's hypermedia backend

[delsydebothom]

Having recently acquired a neatly performing 90s laptop with a copy of Microsoft Office '95, I've been poking around in the Bookshelf program included on disc #2. It is an impressive product. I would been very pleased to know what software was used to develop it, and whether it was strictly internal to Microsoft. If not, I want to try to find it, learn to use it, and produce a English-Latin/Latin-English dictionary and thesaurus for Windows 9.x. If it was internal to Microsoft, does anyone know of any hypermedia development software for non-programmers that would allow someone to achieve a similar result? 

[jumper]

Internal, see: https://en.wikipedia.org/wiki/Microsoft_Bookshelf

Try: WinHelp, Frontpage