The Conroy & Conroy Subroutine Library (2021.3 edition)

TTri_State
What: enum
File: Typedefs
Layer: 0
Platforms: C, C++, C#, Javascript, Pascal (all), PHP, Python

An enumeration consisting of three possible values: TS_False, TS_True, TS_Dont_Care

Note that in Javascript, this is an object consisting of the three values.