More or less concrete ideas of material that could go into the book

• quick start section similar to the one on fossil's homepage, just a bit more verbose with explanations and links to relevant sections where the actions are explained in more detail
• explanation why fossil is called fossil (from Quotes: "The very name 'fossil' was to chosen to reflect the unchanging nature of things ..."*.)
• section on markup: fossil wiki markup, markdown, plain text (here also mention commands such as fossil test-markdown)
• section on pikchr
• section on skins and the UI CSS
• include explanations from interesting/important forum posts or from post with often asked questions
• comparison with git
• section on the philosophy of fossil and the fundamental design principles
• section on what kind of animals artifacts are
• section on libfossil
• section on the cvs2fossil script and to importing from other systems
• note when a certain feature was added? (such as "the --numstat option to the fossil diff command was added in fossil 2.3")

Ideas on the structure

• key word and command index (as in the current version)
• boxes with „Good to know“ hints
• boxes with „Best practice“
• admonitions for small hints, warnings, „see also …“ and others

Ideas on the layout

• coloured background for CLI text and code
• nice image and/or citation at start of chapter (see Quotes)
• coloured text for certain types of content?
• for HTML version: good navigation on every page!