RevMedia

Determines which value of a MVed field will be returned when the { } function is used. If @MV is set to 0 or " and a { } function is used, all multivalues for the field will be returned. If @MV is set to a number, the corresponding multivalue will be returned.

@MV is also used by SI.MFS when calling the ! code for a file. It can take one of three values, 0 for Write, 1 for Read and 2 for Clearfile. Can be amended.