correspondence between pref notications and algo's

[Joseph Bruni]

When I'm looking at preferences on a key, the list of algo's is using a shorthand
notation, such as "S9 S8 S7 S3 S2 H2 H3 Z2 Z1". "showpref" shows the longer
versions.

Is there a document somewhere that describes which shorthand corresponds to
which algorithm (i.e. what maps H2=SHA1?)?

(BTW, the --without-readline option also allowed me to compile 1.4 on HP/UX.
Thanks David!)