>Hi Nancy,
>
>>For objects, one should be careful about checking just whether their type is "O". It's safer to check a property, say "Name", if it will have one, or add !ISNULL() to the check.
>
>I've heard this before, but don't remember why it makes a difference. Could you enlighten me?

An example will illustrate it best, I think. Try this:

lo = createobject('form')
?Type('lo')
lo = .NULL.
?Type('lo')