让一个字段处在中间

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* $GetComNam - Get Company Information
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P$GetComNam b
D $GetComNam pi 30a
D LenStr s 3 0 inz(0)
D ComNum s 3 0 inz(1)
D ComNam s 30 inz(*blanks)
D TmpComNam s 30 inz(*blanks)
*
C if not %open(CCFILEL)
C open CCFILEL
C endif
*
C eval ComNum = 001.
C ComNum Chain CCFILEL
C if %found(CCFILEL)
C eval TmpComNam = %trim(CCCONM)
C endif
*
C if %open(CCFILEL)
C close CCFILEL
C endif
*
C eval LenStr = ((%len(TmpComNam) -
C %len(%trim(TmpComNam))) / 2) + 1
C eval %subst(ComNam:LenStr) = %trim(TmpComNam)
*
C return ComNam
*
P$GetComNam e