I use devmon to fetch and graph temperature data into RRD files, and to report the status in the "temp" column/status page. In order to capture the data, TEST2RRD includes "temp=devmon", and the graph is displayed on the trends page, as expected.

However I want the graph to display on the "temp" status page, and having "temp=devmon" isn't sufficient for the graph to display on the status page. Instead, I need to have just "temp" in TEST2RRD (without the "=devmon" part).

This seems to work just fine. Not only do the graphs now appear in the "temp" status page, but I also appear to be getting updated data into the RRD files and shown on the graphs, and I can't find any ill effects of this change.

So my question is, what does the "=devmon" do, and why is it required?