Now we move on to the other controls I've listed.
Convert is just the executable for the program, used when you are ready to start your conversion. You can also pause or stop the conversion from here.
Tools has a very long drop down list as you can see in this snapshot:
You can join video and audio files of similar characteristics, split files, burn DVDs, take snapshots, and even remove commercials from video captured from tv broadcasts.
Clicking on Options brings up the Settings window and from here you can set up a permanent spot to output your videos on the hard drive, adjust subtitle fonts and colors, set the program working priority, etc. Here is the Settings Window and the various tabs it contains:
The other commands at the top of the window are self evident, where you can select the preferred language used in the program, or view logs of your process and there is even a help section.