Can anyone tell me why Excel will not let me use the customize option in
formatting cells to "CS-###"? I would like to be able to type in "150" and
have it automatically come up as "CS-150". I use this function quite
frequently and can not understand why Excel will not allow me to use "CS-###"
when any other letters work just fine. For example, it will let me do
"TS-###", "SC-###", "XY-###", and so on with no problem at all. But for
whatever reason it will not let me use "CS-###". Is it just my computer or
my version of Excel? Any input would be greatly appreciated, thank you.