Modify an existing quota record.  The UIC must be specifed;
 it may contain wild cards. Only those attributes of the quota
 record explicitly specified will be modified.

 FORMAT:
  MODIFY <uic> </PERMQUOTA=n> </OVERDRAFT=n>

 EXAMPLE:
  MODIFY [11,17] /PERMQUOTA=30000

 This will set the permquota limit for UIC [11,17] to 30000.
 The overdraft limit is not modified.

Additional information available:

/OVERDRAFT/PERMQUOTA

 This qualifer allows the user to specify how many blocks
 (decimal) that a user with a given UIC may use on a given
 volume, OVER AND ABOVE the user's PERMQUOTA limit.  If
 this qualifier is not present or no value is specified, the
 field in the record is not modified.

 EXAMPLE:
  MODIFY [11,17] /OVERDRAFT=200

 This will modify the quota record for UIC [11,17] to set the
 overdraft limit to 200 blocks.

 This qualifier allows the user to specify how many blocks
 (decimal) that a user with a given UIC may use on given volume.
 this qualifier is not present or no value is specified, the
 field in the record is not modified.

 EXAMPLE:
  MODIFY [11,17] /PERMQUOTA=25000

 This will modify the quota record for UIC [11,17] to set the
 permanent quota to 25000 blocks.