### SESSIONVAR -- name of CGI and session variable that stores the session ID - Syntax: `%SESSIONVAR%` - Expand to: `TWIKISID` - Related: [[TWikiUserAuthentication]], [[AUTHREALM|Main/WebHome#VarAUTHREALM]], [[SESSIONID|Main/WebHome#VarSESSIONID]], [[LOGIN|Main/WebHome#VarLOGIN]], [[LOGOUT|Main/WebHome#VarLOGOUT]], [[SESSION_VARIABLE|Main/WebHome#VarSESSION_VARIABLE]]