Where can I get a PDF version of SDK 13 documentation?

[daguro]

I would like to have a PDF version of the SDK 13 documentation so I can search and not get results for SDK 9.

[endnode]

There is only off-line DOC archive (HTML) available at the same download site as the SDK itself (this is for every major SDK release and it's pretty much equivalent of PDF I think).

[daguro]

I was hoping for something like ST's documentation, like this: www.st.com/.../en.DM00105879.pdf

I find the documentation provided by Nordic to be lacking. I ran ctags in the components directory, so I can find symbols, but trying to understand how things work by primarily reading source code is tedious.