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  <div class="panel-heading codesum"><span class="anchor" id="proc-sindex_character_string"></span><h3>
public elemental function <a href='../proc/sindex_character_string.html'>sindex_character_string</a>(string_, substring, back) result(i)
    
    
   
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    <h4>Arguments</h4>
    
      
      
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