Hi Geoffrey, With respect to your query about the 'present participle + noun' form of heading, I suspect you will find it comes from the Competency-based learning [CBL] approach, which mandates that each heading must have something that looks like a verb and its target. With this style of heading, when someone has learned you can use a past participle to designate competence - efficient, ain't it? When I started learning engineering, all headings were just the name of the object / concept about to be described, analysed, criticised, eg, turbine principles, blade angle vs shaft speed, bearings, lubrication ... I have miniscule sympathy for the CBL approach - would you like your heart operated on by someone who was merely 'competent'? Bring back excellence, I say! I agree that there is no need for such redundancy as 'Table of' Contents, 'Schedule of' Figures, 'List of' tables - all a 'Source of' Toilet Paper. I think chapter headings and other, apparently silly introductory words are often put there because that's what the client put in the contract as a deliverable, and you want the grand paymaster to see that you have complied, so that the strange ritual called 'payment for services rendered' will repeat. However, I think there can be a case for repetition. We cannot mandate how a reader should find relevant material in any document. At the beginning of many user docs, I tell the reader not to read this doc like a novel - treat it as a reference - go where you need or want. Because readers have many different levels of skill, we can only guess vaguely what a particular reader may need; hence, I believe that we should provide many pathways, including repetition. For instance, if you provide hyperlinks within your doc, a reader may avoid the Contents or Index pages altogether, may browse or drill down till something looks relevant and then just follow links - without ever seeing chapter headings. In one instance, I used a series of system diagrams, each linked to a more detailed diagram eventually ending, in some cases, in a word-based description. This 'peeling of the onion' method reduced what had been over 1000 pp of engineering instructions to an 88 pp doc. If I know I am writing for absolute beginners, I may avoid links at first, and may repeat material so the whole of each instruction is in one contiguous lump - even if that means re-using that stuff about formatting paragraphs / fonts ... When I first started in Tech Writing [motor vehicle assembly], there was no user documentation - if any existed, I wrote it, because I had analysed the work process. When I returned to Tech Writing more recently, I used to search the user documentation - often in vain - for how to do something. Other members of the team who had been on the training course - not I, because I had joined after the initiatrix, who could no longer afford to send people on courses - would quietly point to the date on the user documentation title page and the date of the software in the Help About section on-screen; I had been given an out-of-date copy of the user documentation because no-one would part with a carefully annotated personal copy. So, I learned to use the drop-down menus and the built-in Help - which is also often out of date, but not by so much as the hard copy. Consequently, in answer to your question about whether I prefer to look in the Contents or the Index, my simple answer is 'No'. Cheers, Brian.