SessionInitiator equivalent of SSO

[Matt MacAdam]

Question on the SSO shorthand element (I tried searching for this one
already...sorry if I missed it):

What's the equivalent in a SessionInitiator element?   That is, which
attributes of SessionInitiator are given default values (and what are
the values?) when using the SSO element?  Let's suppose we're using
the vanilla:

<SSO entityID="https://idp.example.org/idp/shibboleth">
  SAML2 SAML1
</SSO>

The docs say " the <SSO> element automates the installation of the
appropriate handlers based on the protocols selected for activation.
Most of the remaining settings are equivalent to the settings
supported by the "common" <SessionInitiator> types."

But, looking at the settings for, say, the SAML2 SessionInitiator,
it's still not entirely clear what attributes are set, and what their
values are (the docs give some hints, however).

I can consistently set up working SessionInitiator elements, but it's
not entirely clear to me in what ways they may differ in functionality
from the SSO elements.

Thanks in advance,

-----
Matt MacAdam
Identity & Access Management Specialist
UW Information Technology
206-616-9842