dummy
  • A non-operational component, device, or piece of equipment which can be connected or installed as if it were a working component, device, or piece of equipment. Used, for instance, for testing, or to fulfill a requirement.
  • In computers, a character, variable, instruction, address, or the like, which serves as a placeholder. It does nothing more than reserve a space until the intended item replaces it, or to fulfill a requirement.

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