silent-referent

Indicates a silent referent: a referent that is written without its existence being noted on the referents shelf. Silent referents are used when the detection of undefined referents is not required:

  output silent-referent "table mark %d(table-mark-count)"

When resolved, a silent-referent takes on the stream's effective value, if any. If there is no applicable default value of the stream to which the referent has been written, attempting to resolve the referent will cause an error.