Manuscripts must be double-spaced.    From Wordnet, Princeton University. 

Verb (used with object) : Always double-space a term paper.    From Dictionary.com. 

Verb (used without object) : I can never remember to double-space.    From Dictionary.com. 

Keep the novel synopsis 2-5 pages (double-spaced).    From Wordnik.com.  [Superhero Nation: how to write superhero novels and comic books » How to Write a Novel Synopsis] Reference

Just a hair over a double-spaced page in OpenOffice.    From Wordnik.com.  [Bradbury and Heinlein « Morgan Dempsey] Reference

It was printed up as a double-spaced nine-page letter.    From Wordnik.com.  [The Sum of all Fears]

A treatment consists of three to five double-spaced pages.    From Wordnik.com.  [BOOK VIEW CAFE BLOG » Writing Nowadays: Treatments] Reference

Format: Essays must be typed, double-spaced, and paginated.    From Wordnik.com.  [Archive 2005-12-01] Reference

Rule of thumb: a premise is one double-spaced page or less.    From Wordnik.com.  [Archive 2007-05-01] Reference

Limit is 2-5 pages, double-spaced, in Tagalog or in English.    From Wordnik.com.  [Horror Writing Contest] Reference

Just black words on white pages, double-spaced 12 point type.    From Wordnik.com.  [Jamie Malanowski: ASME Awards: A Modest Proposal] Reference

Entries should be 2 pages, double-spaced on short bond paper.    From Wordnik.com.  [Archive 2009-06-01] Reference

Manuscripts not typed and double-spaced will not be considered.    From Wordnik.com.  [April 22nd, 2009] Reference

About a month beforehand, I submitted my 10 double-spaced pages.    From Wordnik.com.  [Archive 2008-05-01] Reference

Q: My essay is 526 words but still under two double-spaced pages.    From Wordnik.com.  [FAQ: All-USA College Academic Team] Reference

He then submits in regular double-spaced prose as per guidelines.    From Wordnik.com.  [Basic Book Construction] Reference

The letter is typed, double-spaced, on standard size lined paper.    From Wordnik.com.  [Archive 2006-08-01] Reference

It looks to be 1500 pages of single-sided double-spaced goodness!.    From Wordnik.com.  [Suvudu - Science Fiction and Fantasy Books, Movies, and Games: May 2009 Archives] Reference

A good day for most writers is five double-spaced pages of new material.    From Wordnik.com.  [Q & A with Sheldon Siegel] Reference

I'm lucky if I write two double-spaced pages in that period from 9: 30 to.    From Wordnik.com.  [Oral History Interview with Virginius Dabney, July 31, 1975. Interview A-0311-2. Southern Oral History Program Collection (#4007)] Reference

When I need to submit something, back to Courier New, double-spaced, etc.    From Wordnik.com.  [Word 2007 Beta — Shiny! « Whatever] Reference

When an agent asks for the first five pages, does that mean double-spaced?.    From Wordnik.com.  [Archive 2006-09-17] Reference

In fact, bills are printed double-spaced, in large type, with wide margins.    From Wordnik.com.  [Matthew Yglesias » Stan Collender: Critics of Stimulus Bill’s Length are “Ridiculous”] Reference

The hard return means that on some systems, the lines may appear double-spaced.    From Wordnik.com.  [The Project Gutenberg FAQ 2002] Reference

And I have edited material by published authors that was not even double-spaced!.    From Wordnik.com.  [Don’t sweat the small stuff] Reference

Manuscripts should be typewritten and double-spaced on 8 ½ X 11 plain white paper.    From Wordnik.com.  [Asian American Short Story Contest!] Reference

Some want the synopsis double-spaced; some say this applies only to the manuscript.    From Wordnik.com.  [Don’t sweat the small stuff] Reference

And who made the rule that typos look even worse in double-spaced 12-point Courier?.    From Wordnik.com.  [One word at a time] Reference

Three double-spaced pages is not a lot, there is little depth, I can only hint at it.    From Wordnik.com.  [Ready for Class « So Many Books] Reference

In the sf and fantasy field, 12 point Courier double-spaced is definitely the default.    From Wordnik.com.  [25 lines per page?] Reference

A single megabyte of storage space is the equivalent of 500 double-spaced pages of text.    From Wordnik.com.  [Wired Top Stories] Reference

There's twenty-three lines to a single double-spaced page, so I have 253 words to a page.    From Wordnik.com.  [What's In A Word Count?] Reference

The papers shouldcontain fewer than 40 double-spaced pages, including notes and citations.    From Wordnik.com.  [Religious Communication Association: Journals] Reference

The length is limited to two pages. 1″ margins, Times New Roman 12-pt font, double-spaced.    From Wordnik.com.  [naked. « Love | Peace | Ohana] Reference

Each paper must be five to ten pages long double-spaced, 1-inch margins, 11 or 12 point font.    From Wordnik.com.  [Archive 2008-08-01] Reference

Essays should be no more than 35 typed, double-spaced pages 12 pt. font, including endnotes.    From Wordnik.com.  [Archive 2008-10-01] Reference

He said he can't remember the last time he wrote a paper longer than three pages, double-spaced.    From Wordnik.com.  [45% Of Students Don't Learn Much In College] Reference

Moreover, a solid mass of single-spaced typewriting is much harder to read than material that is double-spaced.    From Wordnik.com.  [If You Don't Write Fiction] Reference

A single gigabyte of storage space, or 1,000 megabytes, is the equivalent of 500,000 double-spaced pages of text.    From Wordnik.com.  [Wired Top Stories] Reference

Each follower was supposed to write and submit stories -- typed, double-spaced -- about his or her experiences with him.    From Wordnik.com.  [Take Me for a Ride: coming of age in a destructive cult] Reference

The diary runs to something like 2,100 pages of double-spaced typing, which would make three books the size of that one.    From Wordnik.com.  [The Diary of H.L. Mencken] Reference

It may be that the text you see appears double-spaced -- every second line is blank -- or that all the text is on one incredibly long line.    From Wordnik.com.  [The Project Gutenberg FAQ 2002] Reference