(defcustom hashcash-extra-generate-parameters nil
"A list of parameter strings passed to `hashcash-program' when minting.
-For example, you may want to set this to '(\"-Z2\") to reduce header length."
+For example, you may want to set this to (\"-Z2\") to reduce header length."
:type '(repeat string)
:group 'hashcash)