Michael,
> Now I want to use this file to showcase the use case a bit, but also
> to produce documentation about Org, about how to solve a problem with
> Org. Therefore I want to show the code blocks, but this time with the
> begin/end tags, with header parameters etc. Is there a nice way to do
> that without too much code duplication and convolution? Or should I
> just copy the file and separate the use case and the showcase one?
well. sigh. i had a desire to do something like that recently for a
presentation on using Org Mode with ESS for R code development. (part
of a larger, "intro to R with ESS" series.
with initial help/pointers of others on this list, i developed some code
that takes a file and "orgifies" it (after, in my case, "resultifying").
the code, if you want to look at it, is in the file ess-org.org in this
repository:
https://github.com/ess-intro/presentation-org-mode
(to cover my shame, somewhat -- that *file* is not really intended for
public consumption, it's messy, etc. *do* feel free to complain about
my code itself.)
the first code block is =org-filter-by-argument-value=.
as an example, *this* .org file
https://ess-intro.github.io/presentation-org-mode/artefacts/ess-org-demo-expanded.org
run through my stuff produced this .html file
https://ess-intro.github.io/presentation-org-mode/artefacts/ess-org-demo-results.html
well, either this is serendipitously *exactly* what you were looking
for. or, not. if the former, but you have problems, please ask.
cheers, Greg