A sample exercise, where a
<hint> and a <solution> should be visible (rather than in a knowl).Hint.
Just a little help.
Solution.
The whole story with all the details.
Section 4.2 Additional stress testing
We repeat an image created from an external file, because the EPUB format only wants the file noted once.
We like to put URLs into footnotes, especially for formats like this where they may not be active. This output is from PreTeXt 1 2 .
We make a reference to some math in another chapter (3.0.3) in order to test that validation works for this. We also refer to (2.1.1)
