STEPHAN BÖTTCHERS LaTeX macros. Some journals like the ones published by the American Society for Microbiology, recommend manuscripts to be submitted with the lines of text numbered. I knew I hadn't have been the first person required to have this feature for LaTeX, so I did a google search and found one interesting site. Apparently Stephan Bottchers has written a style file that can be used by LaTeX to automatically generate a document with lines numbered. It's easy to use, just have a \usepackage{lineno} in the preamble; and where you want the line numbering to start in the document, you place a command like \pagewiselinenumbering and it starts at that page. Stephan also has a manual that explains the package in more detail.