First, best to think of Word documents as *not* having pages. Documents
are streams of text. When Word prints the document, it will "paginate"
based on flowing the text into the page until full, or until it sees and
instruction (like a page break). A Section Break is not a page break.
A section break is simply a change in specifications for a section.
Section Breaks include a specification for how to handle pagination,
e.g. page break to odd page, page break to next, or even make no page
break and make it continuous.
It that as a preamble, hovering the mouse cursor over a Section Break
and then pressing the "delete" button should not, as you have
discovered, have any affect on the document.
You have to first *select* the thing you want to do something to, e.g. a
word, paragraph, space, break, etc. and then do it. There are lots of
ways to interact withe the keyboard and mouse to select things on the
screen. The simplest to explain is to hold down the mouse button as you
swipe over the text or break. Then delete.
But keep in mind that simply removing the section may not achieve what
you want. Depends on what it is that is actually creating the page that
you want not to be created on pagination.
--rms
www.rmschneider.com