Meaning of "signatures" in g10/app-openpgp.c, doSign() ?

[Walter Koch]

Moin,

does 
  "signatures created so far: %lu\n"
in g10/app-openpgp.c, 1.23, doSign() 
mean signature on keys or signature on application data?

The translation into german for these would be different:
 "Beglaubigung" for keys
 "Unterschrift" for data

Gruss,
  Walter
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