The JOBSUMMARY, FILEIODATA, and DRCDATA files include a CHARGES data item, which returns the dollar amount charged for various user activities on the system. LOGGER invokes a procedure in the BILLINGSUPPORT library to calculate the value of the CHARGES data item. LOGGER also passes the ACCESSCODE data item to BILLINGSUPPORT for use in its CHARGES calculations. BILLINGSUPPORT is a support library that is designed to be rewritten by the installation to meet its special billing needs. For further information about BILLINGSUPPORT, refer to the BILLINGSUPPORT symbolic and to the System Administration Guide.