 The text editing environment in Emacs uses a double space following a period to identify the end of sentences unambiguously ; the double space convention prevents confusion with periods within sentences that signify abbreviations . How Emacs recognizes the end of a sentence is controlled by the settings sentence @-@ end @-@ double @-@ space and sentence @-@ end . The vi editor also follows this convention ; thus , it is relatively easy to manipulate ( jump over , copy , delete ) whole sentences in both emacs and vi . 
 The text editing environment in Emacs <a href='uninflect' title='1'><mark>uses</mark></a> a double space following a period to identify the end of sentences unambiguously ; the double space convention <a href='uninflect' title='2'><mark>prevents</mark></a> confusion with periods within sentences <a href='null_relcl' title='3'><mark>that</mark></a>signify abbreviations . How Emacs <a href='uninflect' title='4'><mark>recognizes</mark></a> the end of a sentence is controlled by the settings sentence @-@ end @-@ double @-@ space and sentence @-@ end . The vi editor also <a href='uninflect' title='5'><mark>follows</mark></a> this convention ; thus , it is relatively easy to manipulate ( jump over , copy , delete ) whole sentences in both emacs and vi . 
The txt editing environment in Emacs use a double space following a period to identify the end of sentences unambiguously ; da double space convention prevent confusion with periods within sentences signify abbreviations . How Emacs recognize tdaend of a sentence is controlled by thdaettings sentence @-@ end @-@ double @-@ space and sentence @-@ end . Theda editor also follow this convention ; thus , it is relatively easy to manipulate ( jump over , copy , delete ) whole sentences in both emacs and vi .