I am not a very visual person, but I very much appreciate this.
For me the bottom half works a bit better than the top half. This is very much a “Flow Chart”, as it depicts how one might flow through your application, but the top bit hearkens too closely to software flow charts. The “Display gun entry” decision box feels wrong, because as a user I don’t think I enter the application and try to make a decision about which way I will choose to display an entry. I would suggest formatting this the same way you do “from tab list”, which instead of suggesting a conscious choice between alternatives simply shows the different paths you might take.
Other than that, I really like the diagram. And I wouldn’t worry about this:
If you have the perspective that this shows the paths you might take to get to certain information, and not that this shows the possible states of your wiki, I think everything is simplified.