The Object Editor does a variety of things to objects, such as add animations or effects. See the overview for more information:
Some tutorials for help using the Object Editor:
If possible this should be expanded.
I found the Mission editor very easy to use and the tutorial fairly comprehensive but is there any more information anywhere on how to use the object editor as I can't open any object – even extracted ones – in this program.
As a specific example, if I wanted to open up the land speeder in this program to add effects how do I do it?