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Delphi syntax:

procedure WriteLn([ var F: Text; ] P1 [, P2, ...,Pn ] );

Description

WriteLn is an extension to the Write procedure, as it is defined for text files. 

After executing Write, WriteLn writes an end-of-line marker (line feed or carriage return/line feed) to the file. 

If F is omitted, the global variable Output is used, which accesses the processes standard input file. Use of Output in GUI applications raises special issues.

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