Typing latex codes I often use frequent line changes. When I copy, for example, the abstract of a paper from the latex codes, and paste it to some place, for example, a paper submission system, the text appears ugly because of a lot of line changes (maybe with some extra spaces too). Is there a direct command or way to operate in Latex so that the text I copy has no line changes or extra spaces? I am using TeXLive 2014. Thanks in advance.