- In geology, rock (or stone) is any naturally occurring solid mass or aggregate of minerals or mineraloid matter. It is categorized by the minerals included, its chemical composition, and the way in which it is formed. Rocks form the Earth’s outer solid layer, the crust, and most of its interior, except for the liquid outer core and pockets of magma in the asthenosphere. The study of rocks involves multiple subdisciplines of geology, including petrology and mineralogy. It may be limited to rocks found on Earth, or it may include planetary geology that studies the rocks of other celestial objects.
- History of PuTTY’s development (chiark.greenend.org.uk)
I received email from a software architect asking me if there was a writeup of the history and gradual development of the PuTTY tool suite. I wrote and sent a long response, and having done that, it seemed a shame to waste it. So here it is as a public article too.