minor grammar change
one sentence addition from Mark about verify responses are seen
clean up PDF by adding simpara tag around a long URL

It was all one one line and lost in the margin. (Reported
by Mark.)

NOTE: we have this same sentence and URL twice in the Guide --
maybe should only be here once.
explain key-directory different (from Mark)
put para around qandaset tags to fix PDF

The PDF had the first question on same line as previous paragraph.
(This was reported by Mark.)