Question about wikipedia data STORAGE FORMAT 

Hi, let me ask a question. Since I am a little busy and 
I am not English langauge native, my ssentences could be poor.
And I would be glad if you answer my question immediately since I have to leave
a little later. 

When I edited a page, I usually did line break after about 60 or so characters.
You could see how I edit by editing your talk page, this page. As you know,
by the tag < p > of the HTML langauge, the wiki did aggregate the line-broken
sentences into a full paragraph automatically.

I thought that diff is the main block of the storage mechanism of wiki, as
wiki does not have to save all the full page. Wiki needed to save only
diff of the pages. I think so.

Then by making line break as I am doing now, does my method make
the diff data of wiki SMALL? http://en.wikipedia.org/wiki/Wikipedia:Diff said that
Some editors find that adding manual line breaks improves the diff function.
In other words, is making many line breaks of a paragraph is more efficient
to reduce the database size of wiki? Thanks. (  )