HTML URL Conversion (HU)

The HU conversion code translates reserved characters in HMTL URL strings to/from their escape codes.

Used as an output conversion, reserved characters are replaced with their hexadecimal escape codes. For example, a comma is replaced by %2c. Spaces are replaced by + signs.

Used as an input conversion, hexadecimal escape codes are translated to their equivalent characters and + signs are replaced by spaces.