How do I remove carriage returns from a document?

How do I remove carriage returns from a document?

I have a document that I'm bringing into Zoho Docs.  Each line has a carriage return that I want to remove.  I know how to do this in many word processors -- searching and replacing -- but:

1.  I don't see how I can view the carriage return characters in Zoho Docs.  Is this not possible?

2.  In the Find and Replace, I can't see a way to enter these characters, or to enable regular expressions.

Any help here?

Thanks.