The Return Command controls what text should be sent back to the game when the Command Sequence has finished running. It can force the Command Sequence to stop, or set the text to be returned which can be overwriten by another Return Command later in the sequence.
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.
Return Text - The text to be sent back to the game. It can be a string or variable value (by entering the variable's name).
Is End Of Sequence? - If checked it will force the sequence to end without running any more Commands. If not checked the sequence will continue to run. If there is another Return Command after this Command, the text to be returned from this Command will be overwritten with the new text to return.