A draft was an early version of a text.
In 2374, Rom stole a PADD from Damar which contained a draft copy of a secret memorandum about poisoning the ketracel-white supply of the Jem'Hadar. (DS9: "Behind the Lines")
In 2378, Q claimed that Icheb had just given him a few notes on his first draft of an essay about the Q Continuum, though Captain Janeway suspected Icheb had written it. Q later turned in a new draft of his essay, titled "I, Q: An Insider's View of the Continuum". (VOY: "Q2")
Soon after, The Doctor sent a working draft of his holonovel Photons Be Free to Broht & Forrester, who wanted to publish it by the end of the month. The Doctor protested since he needed time to make revisions. Ardon Broht agreed, but gave him a deadline for a final draft. (VOY: "Author, Author")