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Microsoft 9.19 User Manual

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5 
2.2 TWAIN Application 
TWAIN mainly applies to the following three software components: 
 Application software 
 Source manager 
 Source 
 
The components are related to each other as shown below. 
 
 
Figure TWAIN Application 
Source 
(Image scanner control of the  driver, etc) 
Application software 
(photo retouching software, etc) 
Source manager 
(TWAIN.DLL / TWAIN_32.DLL / TWAINDSM.DLL, etc)
Image scanner, etc.