Let's take a step back here. You linked a page with only read-only attributes and say that you want know what changing them does. Why would we document what a change does, when you cannot change something? It is wasted time and misleading.
The aim for the *Prototype pages on the Lua API doc page is to document the format and make sure that it is obvious what the "connected" property in the data stage is. The linked page does this rather well already by using the same name as the data stage properties, so no further explanation is necessary.
As it should, because the wiki is the prototype documentation, and the page on there should describe what changing does - because it is about changing it. You have very valid points with information still missing from the wiki. It is something that I am working on, but documentation takes time and the "normal" wiki is higher priority than pages that no-one might ever use.The wiki answered my question
I recommend you to make a post the in modding help subforum whenever you want to know how a specific prototype property does. When someone wants to use a property, it means that it is always worth my time to spend 30+ minutes looking through the source code and writing a description for the property right then and there, so I will usually do so. Thus, you get your question answered and the prototype doc slowly gets better, with a focus on the useful properties. In case you are interested, here are past examples of such "documentation requests": viewtopic.php?f=34&t=69889, viewtopic.php?f=25&t=70098, viewtopic.php?f=25&t=69563, and viewtopic.php?f=25&t=70307 (yet to be documented).