4.2.3.3.6 "OS/390 V2R9.0 TSO/E User's Guide" via IBM BookManager BookServer

4.2.3.3.6 How to Lock or Unlock a Window

Whenever you or the system enters data in a stream, you can easily scroll towards the bottom of the stream by pressing the Enter key each time the window fills up with information. Sometimes, however, you don't want your data to move, for example, when you are scrolling or using the FIND command to locate a specific text-string. Therefore, Session Manager automatically locks the window when you issue the FIND or SCROLL commands.

When a window is locked, it means that the window is frozen at its current position and will not move to display new information even if you press the Enter key. In the default environment where several of the program function (PF) keys issue the FIND and SCROLL commands, pressing the key causes the default window (MAIN) to lock. This window locks so that when you use a PF key to scroll over the information in a stream, the window remains at that position until you are ready to move it. A locked window, however, does not mean that new information cannot enter the bottom of the stream.

An unlocked window in the default environment means that each time you press the Enter key, the MAIN window automatically moves to the next half-page of information.

You can unlock a window at its present position, at the bottom of the stream, or at the information it was displaying when it was last unlocked by using the UNLOCK command. After issuing this command, you can automatically move the window forward over the stream by pressing the Enter key.

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4.2.3.3.6 How to Lock or Unlock a Window

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