[c-nsp] Cisco IOS

[Kristofer Sigurdsson]

> For the less initiated, how would you even find the right image (right 
> feature set) without just knowing what all the (y|p|pk9sv|pv|k91pv|etc) 
> codes mean?

While I do not think it's easier to look those codes up manually than
going through the Feature Navigator, there is still a pretty useful PDF
about IOS naming conventions, see 
http://www.cisco.com/warp/public/765/tools/quickreference/ciscoiospackaging-eng.pdf
pages 7-8.

-Kristo