📖HomeBack If the user is configured with a single document interface (SDI), ensure that the home page has been configured in the user profile. If a mimic is currently open when they logon, then they will remain on that mimic and the home page will be available from the Home button in the toolbars. If no page is open, the home page will be displayed.
If the user is configured with a multiple document interface, ensure that the user has been configured with both a home page in the user profile and the option that specifies that the home page will be displayed on logon (Show Home Page At Logon). If Show Home Page At Logon is turned off, the currently displayed page will be left open when the user logs on to the system.
The best way to understand this design is to consider a typical user interaction with the system. A system operator walks into the building to determine the state of the system. As they are only looking at the system status, they do not log on. After browsing to part of the plan they see that a pump is running that should be stopped. They log in, stop the pump and log out again quickly and easily. If the home page was displayed when they logged on, the user would need to navigate to the same mimic again, potentially with serious consequences due to the extra time required (not to mention the annoyance of navigating through the system again).
The web environment behaves very similar to this, except the guest user home page is defined by the Default View property of the system Root object.