This interface gives the possibility to the user to import default 
classification rules and to modify them and/or to formulate his/her own 
rules.

Rules may be formulated in two ways: either by entering constraints on the
existing fields of the OST which will be translated into an expression 
understandable by the SELECT/TABLE command (Pushbutton "Apply") or by 
writing directly this selection criteria in the TextField 
"Selection Criteria".

The default classification rules provided for EMMI and SUSI exposures can be
copied in the local OST by pulling down the menu "Rule" of the MenuBar and
pressing the button "Import". 
Rules may be edited and modified by pulling down the menu "Edit" of the
MenuBar and pressing the button Editor. Rules may be saved as descriptors
of the OST by pulling down the menu "Rule" of the MenuBar and pressing the
button "Save".