14 lines
		
	
	
	
		
			208 B
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			14 lines
		
	
	
	
		
			208 B
		
	
	
	
		
			C
		
	
	
	
	
	
| #include <system.h>
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| #include <back.h>
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| 
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| File *B_out_file;
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| 
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| open_back( filename)
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| char *filename;
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| {
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| 	if ( filename == (char *) '\0')
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| 		return( 0);
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| 	else
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| 		return( sys_open( filename, OP_WRITE, &B_out_file));
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| }
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| 
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