A target is a necessary component of a slow salvo recipe used by a single-arm universal constructor. A target usually consists of a single object, or sometimes a small constellation of common still lifes and/or oscillators. If no hand target is available, a construction arm may be unable to construct anything, unless recipes are available to generate targets directly from the elbow.
An intermediate target is a temporary product of a partial slow salvo, elbow operation, or glider synthesis. An intermediate target is a useful step toward a desired outcome, but will not appear in the final construction.