mtext_ins -

       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                                mtext_ins(3m17n)

       Insert an M-text into another M-text. The mtext_ins() function inserts M-text mt2 into M-text mt1, at
       position pos. As a result, mt1 is lengthen by the length of mt2. On insertion, all the text properties of
       mt2 are inherited. The original mt2 is not modified.

           MERROR_RANGE, MERROR_MTEXT

       mtext_ins -

           If the operation was successful, mtext_ins() returns 0. Otherwise, it returns -1 and assigns an error
           code to the external variable merror_code.

mtext_del(), mtext_insert()

       int mtext_ins (MText * mt1, int pos, MText * mt2)