This is awesome, thank you!
--
bkw
On 7/17/26 07:52, B 9 wrote:
Thanks for the encouragement!
I’ve learned how to add a PDF document outline and created an updated
file with an index on the sidebar <https://gist.github.com/
hackerb9/4b993d3e204a0eb0e46859a276b22fee/raw/
TRS-80_Model_100_Portable_Computer-jbig2.pdf>.
It took a while to type in the outline and page numbers by hand,
particularly since I added an entry for every BASIC command. I figured
if I do it right, no one will have to go through this tedium again. The
outline is structured as a text file (outline.txt <https://
gist.github.com/hackerb9/4b993d3e204a0eb0e46859a276b22fee/raw/w-
outline.txt>) which can be added to the PDF by using |cpdf -add-
bookmarks outline.txt in.pdf -o out.pdf|. (I don’t know why cpdf
<https://www.coherentpdf.com/> calls the outline “bookmarks”.)
I still haven’t gotten hyperlinks for the actual text figured out, but I
noticed cpdf can create a clickable Table of Contents from the outline
and add it to the beginning of the document. I think it looks a bit ugly
and may not be so useful since the outline shows on the sidebar anyhow,
but see this version with a generated TOC <https://gist.github.com/
hackerb9/4b993d3e204a0eb0e46859a276b22fee/raw/
TRS-80_Model_100_Portable_Computer-jbig2+toc.pdf> for yourself and let
me know if it's useful or not.
—b9
On Thu, Jul 16, 2026 at 9:41 AM Joshua O'Keefe <[email protected]
<mailto:[email protected]>> wrote:
On Jul 16, 2026, at 8:56 AM, B 9 <[email protected]
<mailto:[email protected]>> wrote:
I’ve created amuch smaller version of the PDF <https://
gist.github.com/hackerb9/4b993d3e204a0eb0e46859a276b22fee/
raw/59f26ba22962e78005fee4ee18fec42bdab570e0/
TRS-80_Model_100_Portable_Computer-jbig2.pdf>(40 MB instead of 2
GB) by using JBIG2 symbol compression.
Within the limits of what jbig2 can do, this is a delightful
tradeoff of readability for size. Great work! As a daily driver
version of the manual it seems far more than adequate given that
it's about the size of a baby's pinky nail.
I'd love to see all the variants people are working on consolidated
into a single collection once the dust settles. No doubt those who
come after us would benefit from scrounging all over the internet
hunting down which copy is which, or losing track of the reference
scan. We already run into this problem today with slightly divergent
copies of the same document becoming "welp, that's all we've got."
Thanks for offering this up!
--
bkw
