+StartProfileList: when starting a list of profiles (before <ul>)
+- $profilelist: ProfileList widget, with $profile, $action, and $out
+
+EndProfileList: when ending a list of profiles (after </ul>)
+- $profilelist: ProfileList widget
+
+StartProfileListItem: when starting to show a profile list item
+- $item: ProfileListItem widget
+
+EndProfileListItem: after showing a profile list item
+- $item: ProfileListItem widget
+
+StartProfileListItemProfile: the profile data part of the item
+- $item: ProfileListItem widget
+
+EndProfileListItemProfile: the profile data part of the item
+- $item: ProfileListItem widget
+
+StartProfileListItemActions: the actions (buttons) for an item
+- $item: ProfileListItem widget
+
+EndProfileListItemActions: the actions (buttons) for an item
+- $item: ProfileListItem widget
+
+StartProfileListItemProfileElements: inside the <div>
+- $item: ProfileListItem widget
+
+EndProfileListItemProfileElements: inside the <div>
+- $item: ProfileListItem widget
+
+StartProfileListItemAvatar: Showing a profile list avatar
+- $item: ProfileListItem widget
+
+EndProfileListItemAvatar: Showing a profile list avatar
+- $item: ProfileListItem widget
+
+StartProfileListItemFullName: Showing the profile list full name
+- $item: ProfileListItem widget
+
+EndProfileListItemFullName: Showing the profile list full name
+- $item: ProfileListItem widget
+
+StartProfileListItemLocation: Showing the profile list location
+- $item: ProfileListItem widget
+
+EndProfileListItemLocation: Showing the profile list location
+- $item: ProfileListItem widget
+
+StartProfileListItemHomepage: Showing the profile list homepage
+- $item: ProfileListItem widget
+
+EndProfileListItemHomepage: Showing the profile list homepage
+- $item: ProfileListItem widget
+
+StartProfileListItemBio: Showing the profile list bio
+- $item: ProfileListItem widget
+
+EndProfileListItemBio: Showing the profile list bio
+- $item: ProfileListItem widget
+
+StartProfileListItemActionElements: Showing the profile list actions (prepend a button here, or replace all buttons)
+- $item: ProfileListItem widget
+
+EndProfileListItemActionElements: Showing profile list actions (append a button here)
+- $item: ProfileListItem widget
+
+StartUserXRDS: Start XRDS output (right after the opening XRDS tag)
+- $action: the current action
+- &$xrdsoutputter - XRDSOutputter object to write to
+
+EndUserXRDS: End XRDS output (right before the closing XRDS tag)
+- $action: the current action
+- &$xrdsoutputter - XRDSOutputter object to write to
+
+StartPublicXRDS: Start XRDS output (right after the opening XRDS tag)
+- $action: the current action
+- &$xrdsoutputter - XRDSOutputter object to write to
+
+EndPublicXRDS: End XRDS output (right before the closing XRDS tag)
+- $action: the current action
+- &$xrdsoutputter - XRDSOutputter object to write to
+
+StartCheckPassword: Check a username/password
+- $nickname: The nickname to check
+- $password: The password to check
+- &$authenticatedUser: set to User object if credentials match a user.
+
+EndCheckPassword: After checking a username/password pair
+- $nickname: The nickname that was checked
+- $password: The password that was checked
+- $authenticatedUser: User object if credentials match a user, else null.
+
+StartChangePassword: Before changing a password
+- $user: user
+- $oldpassword: the user's old password
+- $newpassword: the desired new password
+
+EndChangePassword: After changing a password
+- $user: user
+
+StartSetUser: Before setting the currently logged in user
+- $user: user
+
+EndSetUser: After setting the currently logged in user
+- $user: user
+
+StartSetApiUser: Before setting the current API user
+- $user: user
+
+EndSetApiUser: After setting the current API user
+- $user: user
+
+StartHasRole: Before determing if the a profile has a given role
+- $profile: profile in question
+- $name: name of the role in question
+- &$has_role: does this profile have the named role?
+
+EndHasRole: Before determing if the a profile has a given role
+- $profile: profile in question
+- $name: name of the role in question
+- $has_role: does this profile have the named role?
+
+UserDeleteRelated: Specify additional tables to delete entries from when deleting users
+- $user: User object
+- &$related: array of DB_DataObject class names to delete entries on matching user_id.
+
+GetUrlShorteners: Specify URL shorteners that are available for use
+- &$shorteners: append your shortener to this array like so: $shorteners[shortenerName]=array('display'=>display, 'freeService'=>boolean)
+
+StartShortenUrl: About to shorten a URL
+- $url: url to be shortened
+- $shortenerName: name of the requested shortener
+- &$shortenedUrl: short version of the url
+
+EndShortenUrl: After a URL has been shortened
+- $url: url to be shortened
+- $shortenerName: name of the requested shortener
+- $shortenedUrl: short version of the url
+