Calculate str1 - str2 ignoring case. Upto n characters are taken into account.
INPUTS
str1, str2 - Strings to compare
RESULT
The difference of the strings. The difference is 0, if both are equal, < 0 if str1 < str2 and > 0 if str1 > str2. Note that it may be greater then 1 or less than -1.
EXAMPLE
SEE ALSO
NOTES
This function is not part of a library and may thus be called any time.