Adding more HTML code to an Interact.jl app

General Usage
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1

I have created a simple Interact.jl browser-based app:

using Mux, WebIO, Interact, Plots;
function app(req) 
	@manipulate for omega=0.1:0.2:3
	    	x=0:0.01:2*π;
	    	y=sin.(omega*x);
	    	plot(x,y);
	end;
end
webio_serve(page("/", app), 8004)

It was super-easy. Now I would like to add HTML code around it, e.g., a Title, an Explanation, etc. Even just a node(:p, "Hello, Dude!")) would help. I cannot find a single example and can’t figure it out myself. How do I do that best? I tried integrating code from other examples but they all don’t get along with the @manipulate!