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id - id of entry
name - name of entry
shibname - for affiliations using shibboleth - the name of the shibboleth affiliation (the part after @ in eduPersonScopedAffiliation)
dataUpdateText - this will be displayed on the User Preferences->Personal Information page to provide information on how to update things other than Preferred Name in that box
sitewwwaddress - URL for login page for this affiliation; typically it is just the URL encoded parameters to index.php to have the authentication method already selected (i.e. https://vcl.example.org/vcl/index.php?mode=selectauth&authtype=EXAMPLE%20LDAP^{Image Removed})
helpaddress - support email address for this affiliation
shibonly - 1 if this affiliation can only be authenticated via shibboleth, 0 if LDAP is also set up

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