Quickly Add Line Numbers With This Free Script
Occasionally, I'll read requests from users that for whatever reason need to have line numbers in their document.
Our friend Harbs at In-Tools has just posted a free script that does this quickly and easily on a page by page and style by style basis. The script is significantly different than InDesign's built in numbering feature in that it numbers lines, not paragraphs. It works through the use of anchored objects and allows the user to choose which styles to add line numbers to. The anchored objects use object styles and numbers use paragraph styles making the look and feel quite simple to adjust.
You can read more and download the script from this page on In-Tools website.