mdraw_default_line_break -

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

Version 1.8.4                                    Mon Sep 25 2023                 mdraw_default_line_break(3m17n)

       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.

       mdraw_default_line_break -

           This function returns a character position to break the line.

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