seahorse message meaning?

[Tino Meinen <a t meinen chello nl>]

I'm somewhat puzzled by this (ambiguous) message in seahorse

#: src/seahorse-text-editor.glade2.h:2
msgid "Clear sign text with default key"
msgstr ""

Does this mean:
1. To clear a signature text using a default key
2. To clear a signature text containing a default key
3. A clear signature-text with a default key.
4. a typo; it should be: Sign text using default key
5. any I missed?

anyone knows what the message should mean?

Furthermore I found several (nearly) duplicate mnemonic versions of some
strings (I know there is almost always a version with and without
mnemonics, but the versions *with* could be synchronised methinks):

Clear Sign
C_lear Sign
_Clear Sign

_Key ID:
Key ID:
keyid
Key ID


Thank you
--Tino Meinen