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CHRID2

 INTEGER FUNCTION  CHRID2 (TEXTA,LENA,TEXTB,LENB)
 (Substring Index Ignoring Case)

 Given two  character strings  defined by  the arguments  TEXT,LENA  and
 TEXTB,LENB, search the  first string  for the first  occurrence of  the
 second string.  If either of the arguments LENA or LENB are invalid, or
 if the second string is not  found in the first, return 0.   Otherwise,
 return its  index,  or position,  in  TEXTA, counting  from  the  first
 character stored in TEXTA(*).  The result returned is thus always  .GE.
 0.