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Update filterevents.rst (#1944) 

State where filters are actually saved
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Joe Alamo 2017-07-10 22:16:01 +01:00 committed by Isaac Connor
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docs/userguide/filterevents.rst
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@ -101,7 +101,7 @@ How filters actually work
--------------------------
It is useful to know how filters actually work behind the scenes in ZoneMinder, in the event you find your filter not functioning as intended:
* the primary filter processing process in ZoneMinder is a perl file called ``zmfilter.pl``
* the primary filter processing process in ZoneMinder is a perl file called ``zmfilter.pl`` which retrieves filters from the Filters database table
* zmfilter.pl runs every FILTER_EXECUTE_INTERVAL seconds (default is 20s, can be changed in Options->System)
* in each run, it goes through all the filters which are marked as "Run in Background" and if the conditions match performs the specified action
* zmfilter.pl also reloads all the filters every FILTER_RELOAD_DELAY seconds (default is 300s/5mins, can be changed in Options->System)