When users make changes to the database (using the CHA, INP or DEL commands), HLI stores these changes in buffer or a shadow page until one of the following happens:

• The buffer becomes full.
• A program finishes execution.
• A program closes down a FOCUS file by issuing the CLO command.
• A program issues a SAV command.

When any of these events occurs, all pending changes for all programs are written to the database (even if the CLO or SAV command was issued by a program from another user).