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dfChrInc()
Increases the last character of a string
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Syntax:

     dfChrInc( <cStr> ) --> cNewStr

Parameters:

     <cStr>     String.

Returns:

     <cNewStr> Updated string.

Description:

     The last character of the given string is increased by 1 unit. If the
     last character is 255, the next to the last one will be increased.

Example:

     dfChrInc( "John" ) // Joho
     dfChrInc( "Tom"  ) // Ton.DxI..:{viu Dx....~|YwjTow23...P1..~|YwjTow23..........2..........3..h7..Dx~|YwjTow23Dx.Yuwjh.ii:{:inhst}:yutn{stst}:towx.hi.##############################################################################.DxIctn{b Dx....~|YwjTow2:&yIuohy.$:3:77$:yN{h}.n..DxJ{h{w.n.hi Dx....Dx&yIuohy.$Dx::Iuohy.:inhst}4..DxH.nohti Dx....yN{h}.n:Yuwjh.ii.~:inhst}4..Dx.iyhsjnsut Dx....Yuwjh.ii:{:inhst}:nr{n:yutn{sti:tow.hsy:yr{h{yn.hi6:h.nohtst}:{:inhst}...mrui.:v.t}rn:si:r{v|:nr.:v.t}rn:u|:nr.:iuong4290c.php

See also:

     dfCmpNum()