Setting movement

[Twotribes]

I know how to change the cost of movement for units, like sea cost will be 10 instead of 20. What I do not understand is how to create a new movement class and set its criteria. In the editor all I get clicking on the movement class is the ability to change the "string". When I click on the existing classes all I get is the ability to change the "string". Since supply movement has no number in it, I do not understand how this effects movement?

[Twotribes]

Maybe I understand, let me look again, just read the new unit tutorial.

[PDiFolco]

I have a good feeling with this editor, it didn't take me long to find this out [:D] !
As you said, in Settings you have to "change string", that his to give a name to your move mode - as example here I have input "Slither movement" [:'(]

Then in Land you have to go to each terrain type and input/modify the movement costs and othe relevant data for your new move type, as shown here :

[Twotribes]

Yup, I am a little slow sometimes.