http://www.povray.org/documentation/3.7.0/r3_2.html#r3_2_4_1
The opening stanza details a wonderful table of the options to be
discussed in the following section.
Compression=(2..100)
is missing from that table.
Also, in the discussion text "The JPEG compression..."
Compression is quoted, unlike every other switch, and it is not in
green, like every other switch.
--
dik