How do I undo line breaks when changing the margin?

[Guest]

When I expand the margins of the document, how do I get Word to automatically
remove the line breaks and fill each line?

 

[Jay Freedman]

When I expand the margins of the document, how do I get Word to
automatically remove the line breaks and fill each line?

See http://word.mvps.org/FAQs/Formatting/CleanWebText.htm