This name of this article is conjectural.

The M message encoding scale was a Culture communications standard. Each level on the scale represented a protocol, or set of protocols, used to encode and encrypt messages. Levels on the scale were denoted by a floating point number (eg. M16.4[1]); an exception was Mclear[2].


Level Description
Mclear Standard nonary Marain[2]
M1 Basic Culture Intergalactic Ship Language[2]
M2 Standard Contact Idiom[2]
M16 Special Circumstances Section High Level Code Sequence[2]
M32 Special Circumstances absolute-need-to-know Level Maximum Encryption Code Process (SCantk)[2]



  1. Excession, chapter 1.1
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Excession, chapter 3.4

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