add diagram to teach architecture

src/documentation/interface.ts

@@ -1,5 +1,6 @@
 import { key_shortcut, makeExampleFactory } from "../Documentation";
 import { type Editor } from "../main";
+import topos_arch from './topos_arch.svg';
 
 export const software_interface = (application: Editor): string => {
   const makeExample = makeExampleFactory(application);
@@ -8,6 +9,9 @@ export const software_interface = (application: Editor): string => {
 	
 The Topos interface is entirely dedicated to highlight the core concepts at play: _scripts_ and _universes_. By understanding the interface, you will already understand quite a lot about Topos and how to play music with it. Make sure to learn the dedicated keybindings as well and you will fly!
 	
+<object type="image/svg+xml" data=${topos_arch} style="width: 100%; height: auto; background-color: transparent"></object>
+
+
 ## Scripts
 
 Every Topos session is composed of several small scripts. A set of scripts is called a _universe_. Every script is written using the JavaScript programming language and describes a musical or algorithmic process that takes place over time.

src/documentation/introduction.ts

@@ -51,12 +51,12 @@ beat(.25) :: sound('sid').note(
     false
   )}
 	
-Topos is deeply inspired by the [Monome Teletype](https://monome.org/). The Teletype is/was an open source hardware module for Eurorack synthesizers. While the Teletype was initially born as an hardware module, Topos aims to be a web-browser based software sequencer from the same family! It is a sequencer, a scriptable interface, a companion for algorithmic music-making.  Topos wishes to fullfill the same goal than the Teletype, keeping the same spirit alive on the web. It is free, open-source, and made to be shared and used by everyone.
+Topos is deeply inspired by the [Monome Teletype](https://monome.org/). The Teletype is/was an open source hardware module for Eurorack synthesizers. While the Teletype was initially born as an hardware module, Topos aims to be a web-browser based software sequencer from the same family! It is a sequencer, a scriptable interface, a companion for algorithmic music-making.  Topos wishes to fullfill the same goal as the Teletype, keeping the same spirit alive on the web. It is free, open-source, and made to be shared and used by everyone.
 	
 ## Demo Songs
 
 Reloading the application will get you one random song example to study every time. Press ${key_shortcut(
     "F5"
-  )} and listen to them all!
+  )} and listen to them all! The demo songs are also used a bit everywhere in the documentation to illustrate some of the working principles :).
 `;
 };