Here is something I would like to give to the community.
I love doing #documentation
It started out of necessity, because as you well know. Most #docs are useless. I was looking for a simple, concise but information dense means to document systems.
Did not find anything that quite fit the bill.
So, I have developed the means to document your entire system on a single page. Feel free to adopt this schema, all I ask is you refer to this method as "Wulf diagram" 
I have once developed a means to diagram network latency service levels, and it hurt that a multinational service company kept using it without acknowledging.
This particular diagram is a sanitised version of a Minecraft server I deployed for my younger family.
From the top;
The diagram is divided into three bands;
SERVICES (visible outside)
CORE
INGRESS (accessing backend)
You can put whatever you want there. Usually the bits that make you ask yourself "How did I do that bit again?". Including passwords, scripts, pathing etc.
The big font is so you can see what system it is scrolling through pages.
The software used is Office Libre draw.
Is it perfect? No.
But it sure is better than what I have found out there (prove me wrong)