The CreateVar Command creates a new variable with a value. The value can be a set string or copy the value of another variable given its name.
The Command name can be anything you like, it makes no difference when the sequence is run and is purely for organisation purposes.
The 'Command Type:' line reminds you of the Command Type as you might choose not to put it in the Command's name.
The remaining properties are specific to this Command Type.
Variable Name - The name of the new variable to be created.
Variable Value - The initial value of the new variable. It can be a set string or copy the value of another variable. (Remember all variable values are strings. If you are using a number it will be automatically parsed.)