 Word spaces , preceding or following punctuation , should be optically adjusted to appear to be of the same value as a standard word space . If a standard word space is inserted after a full point or a comma , then , optically , this produces a space of up to 50 % wider than that of other word spaces within a line of type . This is because these punctuation marks carry space above them , which , when added to the adjacent standard word spaces , combines to create a visually larger space . Some argue that the " additional " space after a comma and full point serves as a " pause signal " for the reader . But this is unnecessary ( and visually disruptive ) since the pause signal is provided by the punctuation mark itself . 
 Word spaces , preceding or following punctuation , should be optically adjusted to appear to be of the same value as a standard word space . If a standard word space is inserted after a full point or a comma , then , optically , this <a href='uninflect' title='1'><mark>produces</mark></a> a space of up to 50 % wider than that of other word spaces within a line of type . This is because these punctuation marks carry space above them , which , when added to the adjacent standard word spaces , <a href='uninflect' title='2'><mark>combines</mark></a> to create a visually larger space . Some argue that the " additional " space after a comma and full point <a href='uninflect' title='3'><mark>serves</mark></a> as a " pause signal " for the reader . But this <a href='drop_aux' title='4'><mark>is</mark></a>unnecessary ( and visually disruptive ) since the pause signal is provided by the punctuation mark itself . 
Word spaces , preceding or following punctuation , should be optically adjusted to appear to be of da same value as a standard word space . If a standard word space is inserted after a full point or a comma , then , optically , this produce a space of up to 50 % wider than that of other word spaces within a line of type . This is because dese punctuation marks carry space above em , which , when added to the adjacent standard word spaces , combine to create a visually larger space . Some argue that the " additional " space after a comma and full point serve as a " pause signal " for the reader . But dis unnecessary ( and visually disruptive ) since tdapause signal is provided by the punctuation mark itself .