I would like to be able to put an informational message on the Sign On screen for the Web Viewer interface. We are implementing new procedures and would like to inform our users of this change. Is there a way to do this?
No. The only page you can edit is the generic log in page.
You can't edit the mainframe login page because if you will look at the link for the direct login, you will see it is not a webpage.
You created a link like this to do direct login:
The direct login makes a call to the CADocVW.dll passing parameters to bypass the CADVWEB.asp page (which is the one you can edit) and placing users in the Web Viewer application as it is requesting Mainframe login credentials.