closeField
Handler:
```
on closeField
statements
end closeField
```
HyperCard sends the closeField message to an unlocked field when, after editing, a user (or handler) performs an action that closes (that is, removes the insertion point from) the field. HyperCard sends closeField only when the text actually changes.
The following actions close a field, saving any changes that were made to the text:
* Clicking outside the field
* Moving the insertion point to the next field with the Tab key
* Pressing the Enter key
* Pressing Command-Shift-Z to revert the field to the last saved version
* Going to another card
* Quitting HyperCard