URL: http://www.firstbasesoftware.com/man/man5/screens.htm
Last modified: 12 September 1995
Copyright © by FirstBase Software.
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FirstBase screens reserve the first two or three lines and the last two lines for program information. The top line contains three distinct area of information: the name of the tool running, the title of the company or application, and a status area.
The status information is updated often and always reflects the current state of the program that is running.
The second line will contain other pieces of information at times, such as the current record number or the view screen being used to edit with.
The 23rd line is used to display a footer to all programs, and for error messages. This footer displays some relevant file name information, database record and delete counts, index record and organization counts, as well as the current user name, and the time. Optionally, the working directory name is also displayed. See setup(5).
A single bell accompanies error messages, although visible bells are also supported via termcap settings. If recoverable, these messages are displayed on the 23rd line. If the error is non-recoverable, the error messages is displayed on the 24th line just before FirstBase exits.
Note that it is possible to completely turn off lines 1, 2, 23 and 24 of standard FirstBase screen displays by using setup(5) variables. However, these lines are still reserved even when turned off due to error messages and other information that might need to be given to the user.
FirstBase User's Guide and Reference Manual