Edited for consistent period and parentheses usage throughout:
- Removed periods at the end of each element in a list of nouns.
- Placed periods outside parenthetical statements that aren't complete sentences themselves.
- Placed periods at the end of sentences without punctuation.
Around line 143, gave "constants" its own bullet point. Although it is a form of variable or field, it also forms a separate style element with a different guideline. It's also easier to find when skimming when separated - for new contributors who need to learn the style, and veteran contributors who are just double checking.
