Everything was done with an ASCII editor
The Super Metroid – FAQ/Speed Guide is 17,000 words of perfectly-spaced, full justified, mono-spaced text. It’s beautiful to look at.
From the FAQ
What program did you use to justify the text?
None. I just chose words carefully so that everything lined up on the right hand side. Everything was done with an ASCII editor.
This reminds me of the hours I spent in a trance tracking, kerning, and editing text to create a triangular brochure that folded out into a tessellation with full-justified text that fit perfectly into each repeated triangle.