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“Trends” refer to data sets that contain historic information. Trends can consist of data points plotted
for time periods reaching as far back as data is available, years in many cases. Certain viewlets rely on trend data to give users a detailed view of energy usage for a user-selectable time range. This can be useful in identifying areas of concern or opportunities to reduce energy consumption.
Online vs. Offline
There are actually two versions of Periscope with subtle differences, Online and Offline.
Online: The standard version of Periscope that is offered. This requires access to the internet. Periscope can retrieve updates from the cloud.
Offline: For those users who need a closed or 'military' system, the offline version of Persicope can run on a closed LAN (it can also function online as well). This version will require a larger jar file to be installed.