The PrevLogFile module enables you to draw a button that opens a previously logged alarm log file when clicked (if you've configured your application to store new alarm log files on a daily, weekly, or monthly basis – see the "AlarmLogFreq" variable as described in Config.ini [SYSTEM] Section Variables For Alarms. PrevLogFile takes the following parameters:
\AlarmPanel\PrevLogFile(Name)
Note: VTS includes a built-in tool for drawing a button to acknowledge all unacknowledged alarms without requiring you to alter any code. Information on the Alarm Tools library can be found in "VTS Developer's Guide: Alarm Tools Library". Information specific to the Alarm List tool that enables you to draw such a button on a application page can be found in "VTS Developer's Guide: Ack All Button Alarm Library Tool".