More minor changes.

More minor changes.
Center images for TeX output.
(kill-new function):  Remove indentation for sentence talking about
momentarily skipping code.
(cons & search-fwd Review):  Document @code{funcall}.  Document
@code{re-search-forward} with existing @code{search-forward}.
Reference chapter on regular expression searches.
(Recursion with list): Specify a more recent version as being Emacs.
(Recursion with list, Every, recursive-graph-body-print):  Change
`if ... progn' expression to `when'.
(Recursive triangle function): For printing in small book, ensure
section name is not last on bottom of preceding page.
(Keep): Remove extraneous space in function definition example.
(sentence-end): Specify `in English' for glyphs that end a sentence.
Note that in GNU Emacs 22, the name refers to both a variable and a
function.
(fwd-sentence while loops): Write a function as one, not as a form
(fwd-para let): Add `which' to sentence with `parstart' and `parsep'.
(etags): Move sentences involving `find-tag' and sources.  State
location of Emacs `src' directory.
(Design count-words-region):  Better explain two backslashes in a row.
(Find a File): Fix grammar; add a `to' and write `to visit'.  Change
`named' to `selected'.
(lengths-list-file): Remove extraneous parenthesis from reference.
(lengths-list-many-files): Explain `expand-file-name' better.
(Files List): Rephrase sentence regarding Lisp sources directory