<pre>function lowerCase aChar  put the charToNum of aChar into theChar  if ( theChar >= 97 ) and ( theChar <= 122 ) then return aChar -- a=97, z=122  if ( theChar >= 65 ) and ( theChar <= 90 ) then return the numToChar of (theChar+32) --  A=65, Z=90  return aCharend lowerCase</pre>