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