Delete a property from a thing.
While almost all function on things are also available on Type instances, this one is not. This is because a Type instance has a fixed set of properties and so you are not allowed to delete one of them on a single instance. Use mod_type() instead, to delete the property from all instances if this is what you want.
This function generates an event.
|property||str (required)||Name of the property to delete.|
This code shows some return values for del():
.x = 'create and delete this prop'; .del('x');
Return value in JSON format