It might be quite convenient, to have a list similar to the current events.php, where one can see, which events were not acknowledged yet. This is especially handy, when working together with a collegue, to see, which events are still open to be addressed.

This feature could be implemented in various ways, the simplest would be the duplication of the page. This can be tested easily on a Linux Zabbix 2.2.2 system using following commands:

cp -a – /usr/share/zabbix/events.php /usr/share/zabbix/events_unack.php
base64 -d <<BASE64-EOF | bzip2 -cd | patch -d / -p0
QlpoOTFBWSZTWdtwP4QAAETfgEIwRO//+1QBnNq/79/wMAEUrMJUyoeppoAaZGgAAGmgANAEqNIp
+1T1GU2gCMRgAACaYIwJVEbJomnqYnqDQAAAaAaANJRwxrRgQoNewcH6W5R8fy6lBNqSDLhFmPe3
akmmWwpcsDLsxkPl4Qj8IqHRR64NVkQh9LtEv2iq4IqslFvQ2Aa+JjIMjsJXH6f0gGnMxMVBlcy0
CnnRrKqzRKglAjuFJZzxImvHLPmvKSJD6MaToK6JbMozIMvCWdvDfHFulxrHO2mM38OpIfiQbzyj
R0zHU7CnuUxzuOSSDtFsWRIR+CZx4lJo2nRMK1eyAqjx8aWCfoMFBHPEXRyEJywUOyggSLhH2SDJ
RLzpIVxbYNiB8sjSiLREaLINchMPK8FBqk8jPQu5IpwoSG24H8IA
BASE64-EOF

This will just create a duplicated page "events_unack.php" with the appropriate filter rule.

Of course it would be nicer, to have it together with the standard "events.php" e.g. having a checkbox "show unaknowledged only".

If this new feature would be found useful, please include at least the "tivial" version.