In Archive and Archive Analysis modes, comments can be added both for specific frames and for intervals of time.
To add a comment for an interval, select an interval on the timeline, place the timeline indicator either inside the interval or at one border of it, and click the 
button.
Note
If comments are added during playback in Archive or Archive Analysis mode, playback is paused after the button is clicked.
In Alarm Management mode, operators can be required to give comments after classifying an event (see Configuring Alarm Management Mode) or comments can be left in free form, before event classification, by clicking the button. The comment applies to the entire duration of the alarm.