arg Parameter

The arg=newsession parameter is used to end a user’s current session and begin a new one. (The parameter is appended as is; there is no variable.) The Authentication Service will destroy a user’s existing session token and perform a new login in one request. This option is typically used by the Anonymous authentication module. The user first authenticates with an anonymous session, and then clicks a register or login link.

http://OpenSSO-machine-name.domain:port/opensso/UI/Login?arg=newsession