#cryptography__coding__secret_writing  act of writing in code or cipher
  supertype:  committal_to_writing__writing  the activity of putting something in written form: "she did the thinking while he did the writing"
  subtype:  encoding__encryption  the activity of converting from plain text into code
     subtype:  compression  encoding information while reducing the bandwidth or bits required
        subtype:  image_compression__imagecompression  the compression of graphics for storage or transmission
     subtype:  data_encryption  (computer science) the encryption of data for security purposes
  subtype:  recoding  converting from one code to another
  subtype:  decoding__decryption__decipherment  the activity of making clear or converting from code into plain text; "a secret key or password is required for decryption"
     subtype:  decompression  restoring compressed information to its normal form for use or display

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