| PAR_RESULT String | result of an IO operation shown as a string | 
| PAR_VALUES CGIParameters | record of a form input | 
| PAR_MARK String | recorded stateID before the mark | 
| PAR_IGNORED |  | 
| PAR_TRANS String | recorded stateID at start of transaction | 
| PAR_CRE_TV String String | record of a create or init operation | 
| PAR_REM_TV String | record of a remove operation | 
| PAR_GET_TV String String | record of a get operation | 
| PAR_SET_TV String String | record of a set operation | 
| PAR_DB String | record entry for all DB operations.
 the string is already the result of a 
 show operation for DB tuples, so it is
 doubly encoded :-( |