This function is provided as a utility function for use with SayPhoneticΓÇá. Since the SayPhonetic command will only accept upper case letters, the Speech Lab card, as a convenience to the user, transforms all lower case letters to upper case letters with LowerToUpper before delivering the string to SayPhonetic. This function can easily be written in HyperTalk, but the resulting function is annoyingly slow - hence, it is implemented as an XFCN.