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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-GB>Hello,<o:p></o:p></span></p><pre><span lang=EN-GB>I am trying to use strsubst('E+31E+2',searchStr,replaceStr, 'r']) in order to insert a white space (or TAB delimiter) between the exponent (‘3’ in this example, but any digit in general) and the mantissa (‘1’ in this case, but any digit in general) of the first argument (a long series of numbers in scientific format). I did not figure out what replaceStr should look like to refer to groups – defined by patterns in parenthesis in searchStr. In this case, this would be used to defined a group with the exponent, with proper sign and magnitude between the symbol E and the inserted delimiter.<o:p></o:p></span></pre><pre><span lang=EN-GB>Thank you for any help or documentation on this topic. <o:p></o:p></span></pre><p class=MsoNormal><span lang=EN-GB style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Denis Crété</span><o:p></o:p></p></div></body></html>