Go to row by row number
void doAction ( number action )
Perform block level action
void firstRecord ( )
To to first record
void previousRecord ( )
Go to previous record
void nextRecord ( )
Go to next record
void lastRecord ( )
Go to last record
void addRecord ( )
Add a new record
void saveRecord ( )
Save current record
void deleteRecord ( )
Delete current record
void startQuery ( )
Start a query
void executeQuery ( )
Execute a query
void cancelQuery ( )
Cancel a query
void reload ( )
Reload data from database