 With the advent of the computer age , typographers began deprecating double spacing , even in monospaced text . In 1989 , Desktop Publishing by Design stated that " typesetting requires only one space after periods , question marks , exclamation points , and colons " , and identified single sentence spacing as a typographic convention . Stop Stealing Sheep & Find Out How Type Works ( 1993 ) and Designing with Type : The Essential Guide to Typography ( 2006 ) both indicate that uniform spacing should be used between words , including between sentences . 
