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       mdraw_default_line_break - Calculate a line breaking position.


       int mdraw_default_line_break (MText * mt, int pos, int from, int to, int line, int y)


       Calculate a line breaking position. The function mdraw_default_line_break() calculates a
       line breaking position based on the line number line and the coordinate y, when a line is
       too long to fit within the width limit.  pos is the position of the character next to the
       last one that fits within the limit.  from is the position of the first character of the
       line, and to is the position of the last character displayed on the line if there were not
       width limit.  line and y are reset to 0 when a line is broken by a newline character, and
       incremented each time when a long line is broken because of the width limit.


           This function returns a character position to break the line.


       Copyright (C) 2001 Information-technology Promotion Agency (IPA)
       Copyright (C) 2001-2011 National Institute of Advanced Industrial Science and Technology
       Permission is granted to copy, distribute and/or modify this document under the terms of
       the GNU Free Documentation License <>.