PROPOSED FRAMEWORK

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Location for "Remailer Description" (actual remailer)
-the Help File (obtainable through remailer-help standard query

Location for "Remailer Description" (not an actual remailer e.g TURING aka CC)
-(some dedicated webpage, in .txt format
-possibly with a standard name ( \RemailerDescription.txt )

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Section delimination
the relevant section could be delimited with:
-----BEGIN REMAILER DESCRIPTION
-----END REMAILER DESCRIPTION
and contain one line per keyword

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Keyword line
I initially thought of a line looking like a record from a comma-delimited file
But, because the whole section is immerged in a non-machine-readable file,
there is no inconvenient to a more unix-like structure:

$RemailerDescription{"RemailerName"}{"RemailerOccurrence"}{"Protocol"}{"Keyword"} = "Value"
With
 RemailerName is the Remailer's name
     (e.g. "Frog", "CC", "Farout"...)
 Remailer Occurrence is a number/String
     (generally "0", but might be "1", "2" in case of mirrored sites)
 Protocol is the available channel/port
     (generally "80" for http, but could be finger or mail) 
 Keyword is the name of the data whose value follows
     (e.g. "Keyring_RSA_asc" or "Keyring_RSA+DSS_pgp")
 Value is a value (or a list of values, blank-separated) relevant with the keyword
     (e.g. "http://www.privacyresources.org/frogadmin/Keys/pgpkeys.asc")

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Example
Frog saying:
"I offer an ascii-armored version of PGP keyrings, with RSA-only keys
and the preferred location to find it is on my website
  http://www.privacyresources.org/frogadmin/Keys/pgpkeys.asc
and I also offer a binary version"
would spell:

-----BEGIN REMAILER DESCRIPTION
$RemailerDescription{"Frog"}{"0"}{"80"}{"Keyring_RSA_asc"} = "http://www.privacyresources.org/frogadmin/Keys/pgpkeys.asc"
$RemailerDescription{"Frog"}{"0"}{"80"}{"Keyring_RSA_pgp"} = "http://www.privacyresources.org/frogadmin/Keys/pgpkeys.pgp"
-----END REMAILER DESCRIPTION