Is it possible to index a concept that a page talk about. Exemple: on page 10 the author talk about war, but the word war is never written on that page. How to place the number 10 in the existing index reference about war who has already others pages numbers?
One approach would be to make a layer and a text frame where you supply the word, index it, but either set the stroke and fill to none or paper or hide the layer. It will show up in the index you generate.
Mike, Why not just put the word in a frame set to non-printing? I do this a lot for TOCs, and I make the text in such frames very obvious in normal view, usually making it big and red, so I don't forget it's there.
Since I post this question, I have found a way to do what I want.
I simply go on the page where I want to index the word/concept, place my cursor somewhere in the page (near the text of the concept) click there, then, in the Index window, click on "Create an index entry".
When the next window open, I write, in the first heading, my word click on OK and my word appears in the Index list.