Drawing file is built on idea from DXF file format.

Possible entities:
TEXT		- draws specified text
POLYLINE	- draws line, number of points between begin and end point is undetermined
ELLIPSE		- draws ellipse
EOF		- end of file marker

Option codes:
0	- Begin of new entity
5	- Color index [0...11]
	0 - black
	1 - blue
	2 - cyan
	3 - gray
	4 - green
	5 - lightGray
	6 - magenta
	7 - orange
	8 - pink
	9 - red
	10 - white
	11 - yellow
10	- X coordinate
20	- Y coordinate
30	- width (for ellipse)
40	- height (for ellipse)
50	- bold flag [0...1], draws with 'wide' pen
60	- hidden entity flag [0...1]
70	- fill flag [0...1]
80	- Text for text shape
90	- Text scale by X
95	- Text scale by Y
100	- Entity identificator name(s)
999	- Comment line

Example:

999
This is example for drawing text
0
	TEXT
999
Draw text at location ( 50, 100 )
10
	50
20
	100
999
Use bold
50
	1
999
Fill text shape - otherwise you see only text outline
70
	1
80
	This is the text to draw
999
Use scaling 2.0 x 2.0 ( scale 1.0 == font 8 )
90
	2.0
95
	2.0
100
	text shape nr 1
999
End Of File marker
0
	EOF
