Set the debug verbosity.
Verbosity
may be a number from 0 to 32 to set 'on' bits from 1 to number, or
a string of letters where 'a' = bit 1, 'b' = bit 2, etc. up to bit 26.
Some ideas taken from Fidogate/RFmail package, written by Teemu Torma
and hacked by Martin Junius.
Some tcp code taken from JE version, written by Tsuneo Tanaka <ttan@twics.com>
1993, 1994 Eugene Crosser
This is free software. You can do what you wish with it
as long as this copyright notice is preserved.
Many thanks to the institute of computer science in Salzburg/Austria
and especially to Anton Hofmann <hofmann@wst.edvz.sbg.ac.at> who made
further work possible during his lecture.