Looking at the PDF, in section 6.3.2 there appears to be some check-in logs, I've shown these with the >>> <<< marks.

6.3.2.  Lists
A list in TH is an ordered sequence of items, or words separated by white space. In TH the following
characters constitute white space:
>>>
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Download Hex Shun Artifact
7b03c1c83fcd092b090ada102ed76356e9496f2d
File fossilbook.lyx 2010-06-26 12:28:12 - part of checkin
[9ad19c40d6] on branch trunk - Added section on TH
scripting [b832f46d31] (user:  jim) [annotate]
logo FossilBook Artifact Content Logged in as frans Home
Timeline Files Branches Tags Tickets Wiki Admin Logout
Download Hex Shun Artifact
7b03c1c83fcd092b090ada102ed76356e9496f2d
File fossilbook.lyx 2010-06-26 12:28:12 - part of checkin
[9ad19c40d6] on branch trunk - Added section on TH
scripting [b832f46d31] (user:  jim) [annotate]
<<<
’ ’    0x20
’\t’   0x09
’\n’   0x0A
’\v’   0x0B
’\f’   0x0C
’\r’   0x0D