ABAP key word puzzle (Help)

Hi, everyone.
I have read the following code:
CALL METHOD LR_COLUMNS->SET_COLUMN_POSITION
                             EXPORTING :
             !COLUMNNAME = 'VKORG'
             !POSITION   = 01,
             !COLUMNNAME = 'AUART'
             !POSITION   = 02.
So what does '!' mean? I have try to find something in Help, but it has nothing about '!'.
Welcome any suggestions!
Thanks very much.

Hello James,
the exclamation mark is nothing more than a hint to the ABAP compiler. It is required when you want use keywords like export, exceptions and so on as formal / actual argument.
In the given scenario it is no must. But maybe the code is produced by some generator. For a generator not smart enough to no all rules, it is good advice to use exclamation marks for any parameter.
Regards,
Klaus

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I dont think there is a way to download it in that form.
You can however get the PDF version from here -
http://help.sap.com/printdocu/core/Print46c/en/Data/htm/english.htm
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Message was edited by: Matthew Billingham

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ABAP key word puzzle (Help)

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