>   o Teach the library to support multiple codec backends,
>     these are selected at compile time.
>     See common/lib/libprop/prop_codec.c
> 	common/lib/libprop/prop_xml.c
> 	common/lib/libprop/prop_scn.c

i'm not sure if it's a good idea to guess the format by checking
only a single character.
isn't it better to make "SCN" have a little clearer signature so that
it can be detected more precisely?

>   o Add a new codec (called "SCN") in addition to XML format.
>     See common/lib/libprop/prop_scn.c
> 	[example follows below]

> The format has been designed for low encoding overhead and relative
> human-friendliness.

what's the intended usage of the new format?

YAMAMOTO Takashi