In the past, moodle.org had excellent documentation on csv file creation. I referred to it often for myself as well as referred clients to it regularly. I cannot always remember all of the possible headings that can be used for a csv file, and that information was available here. I would gladly add all of the possible headings back to the documentation, but as I mentioned before, I cannot remember all of the possible headings. Any help in creating a list of headings would be greatly appreciated. Current CSV documentation can be found at: http://docs.moodle.org/20/en/CSV and http://docs.moodle.org/19/en/CSV
There is some information here too if that is helpful - that's the page I usually refer to
Thank you so much! That used to show up when you searched .csv. Guess I should have thought about 'Upload users'.
I also usualy refer to the Upload_users page, but it does not always provide the information I need. For example, I now need - from the admin position - to block access of an entire list of users (the No login method, when working with one user at a time). I do not know which value should I use in the auth field within the CSV file. I tried and guessed, but I had no success.