document.write("\
<P>The Disc Parameter Blocks (DPBs) of both drives, the Allocation Vector of\
   drive A (ALVA - a representation of disc usage) and the Check Sum of\
   drive A (CKSA - a representation of directory usage) remain at their\
   normal addresses but the ALVB is located at &amp;BE00 and the CKSB at &amp;BEC0.\
   These CKSs and ALVs allows for a maximum of 184K and 64 directory entries\
   in drive A, and 800K and 256 directory entries in drive B. If larger\
   values are required then the CKS or ALV concerned will have to be moved.\
");