Replace informal expressions and technical jargon
Fix minor typos and style
Fix ambiguous phrasing about CGLS in SHELX
Tone down our introduction of Sand reference for s.u.
s.u. implicitly means estimated s.u.
Explain how unique Olex2 features are saved in .res files
Fix incorrect statement related to centring conditions
Add textbook references to a few basic formulae
Change citation style to (Einstein, 1916) to Einstein (1916)
Fix all citations of Giacovazzo's book to the 3rd edition (2011)