Blackboard 0.15

Blackboard is simple freehand drawing tool onto paper with height.

Menu:

File	usual file handling ...
	Save icon	save icon from current file
	Board	open board tool form
Edit
	undo/redo	5 level undo/redo
	Auto snap	automatic snap of mouse press point to drawing
Hill		height shape of drawing
(A)Combine	combine modes
Shape	plane shape of hill
Color	color exchanges
	White	switch between black and white board		

Mouse:
Left button draws, Right button erases.
Middle button makes zoom.

Combine modes:

Max		Maximum from current height and drawing height
Mult		Multiple rest of height with drawing height
Add		Add current height and drawing height
None		Just mix colors

Mouse:

Left	Draw
Right	Erase
Middle	Pan
Wheel	Zoom,Ctrl or Shift Move,Ctrl and Shift rotate

Keys:
M	mirror (Shift => Y axis)
R	rotate image (Shift => reverse)
S	set start point (Shift => snap)
L	line (Shift => start point unchanged)
P	180° Arc (Shift=>90°)
O	circle
I	rectangle
T	triangle
K	square
J	octahedron
H	hexagon
G	rounded rectangle
B	isometric lines
N	normal lines
.,/:	dotted or dashed line (Ctrl,Shift,CapsLock==NumLock for mode)
\	gradient color (Shift => horizontal,Ctrl => vertical, Ctrl+Shift => center)

C	close line (or copy)
V	paste
X	clear

F1	Help
F2	Hill
F3	Combine
F4	Shape