### SESSIONID -- unique ID for this session - Syntax: `%SESSIONID%` - Expand to: `941fd3d797f64451cc06ffcd03f96779` - Related: [[TWikiUserAuthentication]], [[AUTHREALM|Main/WebHome#VarAUTHREALM]], [[SESSIONVAR|Main/WebHome#VarSESSIONVAR]], [[LOGIN|Main/WebHome#VarLOGIN]], [[LOGOUT|Main/WebHome#VarLOGOUT]], [[SESSION_VARIABLE|Main/WebHome#VarSESSION_VARIABLE]]