### SESSION\_VARIABLE -- get, set or clear a session variable - Syntax: `%SESSION_VARIABLE{"name"}%` - Syntax: `%SESSION_VARIABLE{"name" set="value"}%` - Syntax: `%SESSION_VARIABLE{"name" clear=""}%` - %H% Hint: The users ID is in the `AUTHUSER` session variable, and is read-only - Related: [[TWikiUserAuthentication]], [[AUTHREALM|Main/WebHome#VarAUTHREALM]], [[SESSIONID|Main/WebHome#VarSESSIONID]], [[SESSIONVAR|Main/WebHome#VarSESSIONVAR]], [[LOGIN|Main/WebHome#VarLOGIN]], [[LOGOUT|Main/WebHome#VarLOGOUT]]