- B-type stars are very luminous and blue. Their spectra have neutral helium lines, which are most prominent at the B2 subclass, and moderate hydrogen lines. As O- and B-type stars are so energetic, they only live for a relatively short time. Thus, due to the low probability of kinematic interaction during their lifetime, they are unable to stray far from the area in which they formed, apart from runaway stars.
- Apple II Vapor Lock and the Floating Bus (deater.net)
First, I want to make it clear I didn’t invent any of this. It has been well known since the early 80s. You can read more about this in Bob Bishop’s 1982 Softalk article “Have an Apple Split” and Don Lancaster’s Vapor Lock and Fun with Mixed Fields and Glitch Stomper articles. The technique was really not used that much, probably because it is difficult to use and not really officially supported by Apple.