Changes

* ''uptime''<br>number of seconds since event start, e.g., how long window is active; if event is not active, value will be reset to zero;

* ''uptime''<br>number of seconds since event start, e.g., how long window is active; if event is not active, value will be reset to zero;

* ''gauge''<br>is for things like temperatures or number of people in a room, i.e., value can grow and fall in time;

* ''gauge''<br>is for things like temperatures or number of people in a room, i.e., value can grow and fall in time;

* ''counter''<br>a counter, number of times event was registered during single time frame; value can be more or equal to zero.

* ''counter''<br>a counter, number of times event was triggered during single time frame; value can be more or equal to zero.

== Statistics ==

== Statistics ==