The Comparison section after words:
"Otherwise, both terms are treated as character strings, leading and trailing whitespace characters are ignored, and the shorter string is padded with blanks on the right."
shall be added by the following words:
"Also all tab characters are being replaced with space characters in both terms."
Otherwise the following results can not be explained:
'09'x > '0A'x -> 1 '09'x > '1F'x -> 1 '09'x = '20'x -> 1