type WordBool = False..Boolean(65535);
typedef unsigned short WordBool; //
Represents a 16-bit predefined Boolean type.
Boolean values are denoted by the predefined constants True and False. A WordBool value is considered False when its ordinality is 0, and True otherwise.
A WordBool variable occupies 2 bytes of memory. Technically, the word size on 64-bit processors is not 2 bytes, but Delphi keeps the 2-byte size of WordBool for backward compatibility with the old 16-bit Intel word size.
Note: The ByteBool, WordBool, and LongBool types exist to provide compatibility with other languages and operating system libraries.