of.mesh.insert.dfn
==================

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**of.**\ :red:`mesh.insert.dfn` :blue:`*dfn_tag*` <string> 
    Insert cohesive only on a dfn plane, the dfn should cross the block. OpenFDEM supports inserting cohesive elements on interface. 
    
    **Parameters:** 
        **dfn_tag:** tag of the DFNs.
        
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Example:
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.. code-block:: 

    of.mesh.insert.dfn [DFN1]