"drop" is an attribute that can be either boolean or script.
- If boolean, a value of "true" means the object can be dropped, and "false" means the object cannot be dropped. A default response (using the DropSuccessful or DropUnsuccessful template) is printed when the user drops (or tries to drop) the object, unless a dropmsg attribute is defined.
- If script, the script will be run when the user tries to drop the object.
See also take, dropmsg.