input-file-spec

    Specifies the name of an input file. The input file can be any
    OpenVMS file including binary files, keyed indexed files, or
    files with extended semantics such as DDIF files. Only a single
    input file can be specified; wildcards are not allowed.

 encoded-file-spec

    The name of the file to produce as output. The file output
    by ENCODE will contain all of the information necessary to
    reconstruct the original input file. The format of the output
    file is described in the Description section below.