Deadline case conversion: protect exceptions before publishing

When text must be recased quickly, save the original and select the intended style for ordinary words. Then inspect proper names, acronyms, product names, URLs, and identifiers manually; those may not follow the general rule. Test locale-sensitive letters, especially Turkish dotted and dotless I. Compare the output with the source before publishing. A fast conversion should reduce formatting work, not silently alter exact values or someone's name.