The topmost navigation bar includes , , , and links. If you are logged in, the and links are replaced with a link.
The link takes you to the site homepage if you are navigating at the site-level; if you are looking at a journal, it will take you to the journal's homepage.
If you are browsing at the site level, the link takes you to the site's About page, which may include a description of the site as a whole, and also includes links to the About pages for every journal on the system. If you are browsing at the journal level, clicking the link will take you to that journal's About page only.
If you click the link you will be taken to a login page, where you will be asked to provide your username and password. You will also be prompted to register with the site if you are not a user. If you have forgotten your password, you can click to begin the retrieval process. If you log in from the site level, you will be taken to your site-wide User Home page, which provides information on which journals you are registered with, and in which role. If you log in from the journal level, you will be taken to your journal-specific User Home page, which lists only role information regarding that journal.
If you click the link while browsing at the site level, you will be asked to choose a journal to register with. If you click the link while browsing at the journal level, you will be presented with a registration form, or a message stating that registrations are not being accepted at this time if registration has been disabled.
Clicking the link will bring you to a comprehensive search page. If you are currently browsing at the site level, you will be able to choose whether to search across all journals on the site, or only againt a particular journal. If you are browsing at the journal level, your search will only be perfomed against that journal's contents.
If you have already logged in, you will see a link rather than the and links. Clicking this will take you to your site- or journal-specific User Home page.