Version:           4.3.2 (using KDE 4.3.2)
OS:                Linux
Installed from:    Ubuntu Packages

In particular, help is needed for each of Krunners plugins so that I know what commands and options exist.  I found some of the answers on the web, but still lack details how how to works all possible options.  For example, I have tried to use the unit converter to convert Fahrenheit to Celsius and Celsius to Fahrenheit degrees, but the result is always in Kelvins -- makes no sense why this basic conversion doesn't work, but I can't even tell if it is a possible command.

My suggestion would be to have a third tab (beside "author" and "about") when selecting the "i" for each of the optional plugins, which would contain a brief list of options available.