The document appears to contain programming code snippets related to device management and graphics rendering using a library called 'sgl'. It includes function declarations and setup for window creation and drawing operations. However, the overall context and specific purpose are unclear due to the fragmented nature of the content.

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Nupedia

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29. 패턴 그리고
시간을 초월한 창조의 원칙
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Declare Function DAPI_GetDeviceCount Lib "UsbI2cIo.dll" ( _
ByVal lpsDevName As String) _
As Byte
GetDeviceCount =
Win32API.new("usbi2cio", "DAPI_GetDeviceCount", "P", "L")
num = GetDeviceCount.call(DEV_SYM_NAME)

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58. require 'sgl'
window 100,100 # 100x100
background 100,100,0 #
color 0,0,100 #
rect 20,20,80,80 #
wait

59. require 'sgl'
def setup
window -200,-200,200,200
end
def display
x = mouseX
y = mouseY
line -200, -200, x, y
line 200, -200, x, y
line -200, 200, x, y
line 200, 200, x, y
end
mainloop

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