Syntax: CaseSearch [0|1]
Abbreviation: CS
sets the case sensitivity flag. When this flag is true, the search commands distinguish between the upper and lower case letters. By default the flag is false.
If you invoke CaseSearch with no arguments, it will toggle the flag. If you
specify 0 or 1, the flag will be set to false or true, respectively. A lower
case ‘c’ will appear on the status bar if the flag is true.