what's with all the superfluous "-"s in the book pdf?

hoping i'm not about to make a fool of myself but i'm perusing the
latest PDF form of the book, and i see all sorts of leading hyphens in
the middle of commands, both via the firefox browser and thru the
"evince" PDF viewer. for instance, picking a random page -- in this
case, p. 90 -- i see the command:

$ -svn -cat --r -1 -concept/IDEA -
svn: -Unable -to -find -repository -location -for -'concept/IDEA' -in -revision -1

  where did all these hyphens come from? is anyone else seeing them?

rday

--
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Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry:
    Have classroom, will lecture.
http://crashcourse.ca                          Waterloo, Ontario, CANADA
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