UNUM: Unicode/HTML/Numeric Character Code Converter

Web authors who use characters from other languages, mathematical symbols, fancy punctuation, and other typographic embellishment in their documents often find themselves juggling the Unicode book, an HTML entity reference, and a programmer's calculator to convert back and forth between the various representations. This stand-alone command line Perl program contains complete databases of Unicode characters and character blocks and HTML/XHTML named character references, and permits easy lookup and interconversion among all the formats, including octal, decimal, and hexadecimal numbers. The program works best on a recent version of Perl, such as v5.8.5 or later, but requires no Perl library modules. New version 3.4-14.0.0 (September 2021) updates to the Unicode 14.0.0 standard and the new scripts, characters, and emoji it adds.