This is perhaps slightly off-topic, but I think the camera's user manual is closely related to its features, so may I add some thoughts about that.
Specifically for Pentax, one recurrent point of annoyance are the PDF user manuals supplied with each camera. They lack detail necessary to understand the features, or features are not covered at all.
This is a very strange phenomenon and one might wonder why this is done, because when you spend energy, time and money on research to develop and implement these features, but when you don't advertise them, they virtually don't exist for the user, or users get irritated because they don't want to spend lots of time figuring out their camera. It is a terrible waste of resources. Actually the opposite should be done - max out every opportunity to advertise all the beautiful features to make the camera look attractive.
One reason this could happen is that cameras have become so complicated that a user manual is needed with triple the size we have now to explain every bit and piece. Also, Pentax still supplies the camera with a paper version of the manual, which is where the cost is when it is big and heavy (printing, transport).
What we see today from the likes of Microsoft, Apple and others is that they rigorously ditched the PDF and replaced it by an online version, consisting of a full index with a bunch of webpages linked from it. For example the iPhone 13 manual has an index of more than 800 lines alone, that would be a 800 page PDF at least 1]. Apple is doing this for all their gear, all the info is compact but sufficiently detailed, supplementary links are added to each page for related info, and even users can give feedback to improve the contents. To be fair, a local search option is missing.
Pentax should stop making a PDF and a paper version of the user manual and create an online version only. In the box a leaflet with a Quick Start and a reference to the full manual online. The manual can be accessed by phone or tablet from every location you want. This is not only a solution to the problems we have now, it is a big improvement in general, and I guess at the same time with a reduction of the cost.
1] Example of an online user manual.
iPhone User Guide | Use link: Table of contents
iPhone User Guide ? Apple Support (UK)