I am rewriting my conclusions chapter, to change it from passive and
present tense to active and past tense.  A few times it seems a bit
awkward to have a given time-invariant sentence in the past tense,
however, and I wonder if you think it is OK to mix it a bit as follows.

For example, I may now have something like:

	FT-Linda is described in Chapter 3.   Its provisions for
	creating multiple tuple spaces with different attributes are
	presented.  These attributes are ...

I would change it to something like the following:

	Chapter 3 presented FT-Linda.
	

As an aside,