Is there any way to automatically update the index every time the document gets modified. I'm searching within many big books and I often highlight them. every time I find something that I highlight the index must be reworked and that's so problematic.
Sorry for taking so long in responding to your query.
As per the above mentioned description, you want to update the index automatically when a document gets modified, is that correct?
Please refer to the following links discussing this topic:
Let us know if you have any further questions.
In the options of the index you can disable the warning about changed documents.