Contains the grid position.  
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| int | row | 
|  | First grid row from which the object should start. 
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| int | col | 
|  | First grid column from which the object should start. 
 
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| int | rowSpan | 
|  | Grid row span. Number of rows that the object is allowed to take. 
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| int | colSpan | 
|  | Grid column span. Number of columns that the object is allowed to take. 
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