Three related doc change proposals. The Versions only apply to the third as the first two are for PEP 8. 1. PEP 8 has a section entitled "Encodings (PEP 263)" with a link to the verbose PEP. I think it would be better if it were "Source Encoding" with a link to the 'current' Reference Manual section 2.1.4. Encoding declarations. The latter gets right to the point. 2. This section twice uses the informal and undefined term 'coding cookie'. It is not in the ref manual section above, nor in the glossary, nor in the index. (Dave Angel asked about the definition on python-list. Before searching on the web, he first thought it meant BOM.) I suggest changing "a coding cookie" to "an encoding declaration". 3. The index has several entries that begin with 'encode', including one that just says 'encodings'. The last is the one that points to 2.1.4., but one would only guess by process of elimination. I think 'encoding (source file)' or 'encoding declarations (source file)' would be clearer.
I changed the section heading in PEP 8 to "Source File Encoding" and the sole remaining use of "a coding cookie" to "an encoding declaration". No link, since it would need separate links for Python 2 and 3, and that just gets messing. Now it uses the right terminology, it should be easier to look up. So, this is now just a regular docs bug for Terry's third point about the (lack of a suitable) index entry :)