Modify image programs to handle unrecognised formats.

Handle http://webs.ono.com/usr016/de_xt/ filesystem? zisofs? Mt Rainier?

Problem with XP setup on FreeDOS. Read problem? FreeDOS problem?

/S option to use D:\ via TRUENAME hook? Sharing (what does it do)?

Add a name cache?

Fix potential problem with copyright/abstract/bibliographic filenames?
  (Doesn't generate tilde, doesn't use Joliet.)

Critical sections?

SHSUCDHD: real-time decompression (LZO)?
(et al)   allow reads greater 62Ki?
	  Make incomplete images an error, /W option to make a warning.

Linux/dosemu locking?
Writing to hard drive whilst reading from CD? (Redirecting CDBENCH output.)

Multiple buffers/read-ahead?
 I tested MSCDEX v2.25 with default settings (/M:6?) and /M:1 (rounds to 4?),
 with SMARTDrive, and SHSUCDX 3.00 beta 1, with SMARTCDX. Two tests were
 done: bdiffing a 9M file against itself and dir/s/b on a CD with 5135
 files. The default MSCDEX bdiff was only slightly faster than /M:1 and
 SHSUCDX (3.30s versus 3.40s). The SHSUCDX dir/s/b was half the time of
 either MSCDEX (0.62s versus 1.24s). Thus, there doesn't seem to be any
 advantage to using multiple buffers.