The term DDE Command is an acronym for Dynamic Data Exchange Command. It is a type of computer command that allows two applications to communicate with each other and exchange data. The two crossword solutions for this term are IKE (3 letters) and ETO (3 letters). IKE stands for Inter-Application Communication, which is the process of allowing two applications to communicate with each other. ETO stands for Exchange Transfer Object, which is the data object that is exchanged between the two applications.