Some languages use a wider type of whitespace than the regular word separator after a full stop when typeset professionally. (Similarly, when there are abbrevia

Some languages use a wider type of whitespace than the regular word separator after a full stop when typeset professionally. (Similarly, when there are abbreviations that involve periods, the space after them can be slightly narrower than the normal word separator.) The wider form of whitespace is not easy to get out of regular text editors and word processing software, so some people choose to emulate it by entering two regular word separators. (This is too wide, though, if we are being precise.)