@chrishamm Thanks; yes doing this just in Markdown is not really an option.
However; maybe this just makes it a more general request about the overall layout of the wiki pages; eg; detach scrolling of the navigation panel and decoration from the main page body. It's a petty request anyway. just floating ideas.
And you are also right about the plugin, and I've used the DWC OM browser extensively in my latest project; it is the best reference by far.
..But it requires my machine to actually be switched on and connected to WiFi. This is not always true, especially when I'm coding while on the road (although I have a ssh proxy/tunnel into my network, I just prefer the machine to be off when I'm not about).