Market Data Definition Language (MDDL)
Google
The Financial Information Services Division of the Software & Information Industry Association
MDDL 2.5-beta : overAllotment
MDDL 2.5-betaSchema DocumentationNo Graphics?
Index: MDDL 2.5-beta Schema Documentation
Element: overAllotment
Description: The amount (or percentage) for which an instrument can be over allotted (as in Greenshoe option).
Used by: debtIssueData 
Attributes:  
Uses: sequence  crossrate  currency  calculationType  dateTime  fraction  fractionHandlingType  indicatorsType  marketCenter  multiplier  previousDateTime  quantityDescriptionType  quantityType  valuationType  valuationRef 
Classification: Amount "property"
Diagram: