The special pre_login_help topic is now only displayed when the user
clicks on the "Need help logging in?" link on the login screen, or
selects the top-level Help > Second Life Help (F1) menu.
Asking for help (e.g., pressing F1) before logging in will now display
a specific pre-login help topic, "pre_login_help". This behavior was
agreed upon with Rand to allow us to display a custom page to help the
user log on successfully.
Graham Madarasz