AES/VDI/Line-A bugs:
- The right side of outline characters are clipped e.g. in "LaserChess",
  "Diamond miner" & "Minigolf" games, and in vditext tester:
  https://sourceforge.net/p/emutos/mailman/message/29276993/
  This is due to a bug somewhere in the ugly text_blt() assembler
  function in vdi_tblit.S.
- Thick arcs going partly outside of screen have incorrectly
  drawn pixels at top of screen in vdiline tester.
- In "MathMaze" and "The Ultimate Minesweeper", game win and score
  dialogs leave left/bottom outline on screen when they close.
- Dialog box at the end of Glücksrad game is missing text from
  the dialog button (and the button width isn't correct)
- Line-A polygons are one pixel short at both sides.  This is
  because clc_flit() function does it for VDI (where perimeter
  is drawn separately).  It is visible e.g. in "Japlish" game.

Video problems:
- Omega's XiTec presentations "swing.prg" throws privilege exception
  on exit.  Both TOS v3 & EmuTOS survive that OK, but in EmuTOS both
  screen and mouse acceleration are messed up: EmuTOS exception restore
  is missing videomode & mouse reset.

Atari Falcon / TOS v4 compatibility bugs:
- Escape Paint icons don't show in image operations window and their
  place in toolbar window is inverted on mouse click.
- Falcon FalcAMP button icons aren't visible as EmuTOS doesn't support
  new style RSC files with CICONs.

Problems that also occur in Atari TOS:
- VDI: when drawing a wide polyline with squared ends and more than one
  segment, if the width of the line is greater than twice the length of
  an ending segment, the end will have a bump rather than being square.
  This is because wideline segments are joined by using filled circles
  whose radius is half the width of the line: the bump is a protruding
  part of the circle that joins the end segment to the previous one.

Links to programs listed above:
- Diamond Miner:
  http://www.atarimania.com/game-atari-st-diamond-miner_31993.html
- Escape Paint:
  http://www.pouet.net/prod.php?which=25328
- FalcAMP:
  http://deunstg.free.fr/sct1/falcamp/
- Glücksrad:
  http://www.atarimania.com/game-atari-st-glucksrad-st_22001.html
- Japlish:
  http://www.ntrautanen.fi/marko/arkisto.atari.org/sivut/menu_pelit.htm
- Laserchess:
  http://www.atarimania.com/game-atari-st-laserchess_31257.html
- Minigolf (GFA):
  http://eerott.mbnet.fi/hatari/sources/minigolf.zip
- Swing:
  http://www.pouet.net/prod.php?which=52370
- The Ultimate Minesweeper:
  http://www.pouet.net/prod.php?which=28904
- VDI line/text tester:
  http://eerott.mbnet.fi/hatari/programs.shtml#vditest

(Links missing to: mathmaze.)