New FAQ items on 320x200 resolution, "don't quit" and "ordering info"

README.md

@@ -151,11 +151,20 @@ Then follow the same instructions as for Linux, e.g. git clone the src, cd into
 
 * "a good time killer when I'm baking" - Alessia_Amelia (Jan 2019)
 
-# FAQ
+# FAQ (Frequently Asked Questions)
 
 * Q: 'The scrolling is choppy' or 'framerate low'?
 * A: The code can handle smoother scrolling and faster frame rates by tweaking settings and gameplay code, but is deliberately soft-limited to 18 frames per second (and the scrolling behaviour intended to mimic the original) because the original DN1 behaved close to this, and the point is to offer a nostalgic similar retro 'look and feel' (and thus also frame rate and scrolling behaviour) of the original Duke Nukem 1, which was designed to run on the much slower computers of that era (I used to play DN1 on an 80286 with 16-color EGA graphics in the '90s, and if you've ever had to code for EGA you'd also understand - dj) - so that anyone who also played the original should experience some nostalgic familiarity.
 
+* Q: Why is the game resolution 320x200?
+* A: The original Duke Nukem 1 had 320x200 16-color EGA-mode graphics ("Enhanced Graphics Adapter", an early video standard that supported 16 colors; many games of the time used 320x200). Since this game is intended as a sort of 'retro parody' it deliberately uses the same original resolution (and frame rate) in order to offer some retro nostalgic recognition and familiarity in look and feel and gameplay, especially for those who played the original. (David Joffe note: The first computer I did 'serious' programming on was an 80286 with EGA display adapter in the 1990s, and I spent quite a lot of time playing the original Duke Nukem 1 - I loved the game - and around ~1994 I started working on a very early x86 assembly language DOS/EGA version of what went on to become Dave Gnukem when in ~1995 I started this C++ version. So this wasn't a retro game when I started it - it just took so long to complete it that by the time version 1 was completed, I noticed everyone was calling it a "retro game", so it's now de facto "retro". I felt during development that if one deviates from 320x200 it feels much less like a 'retro parody of Duke Nukem 1'.) The game source code can support higher resolutions - these are controlled by config options - so the 'engine' could be used to make higher-resolution games, and with higher frame rates and smoother scrolling (with some tweaking).
+
+* Q: What does the "Don't quit" menu option do?
+* A: It does just what it says, it doesn't quit the game
+
+* Q: Why does it say "Ordering info" in the menu?
+* A: A small parody and retro recognition item, because the original shareware Duke Nukem 1 had that in the menu - but since this is open source, we add a "not" right after that is [also very 1990s](https://en.wikipedia.org/wiki/..._Not!)
+
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