Field of Card of Stack

[Shari]

Nothing earthshattering, just something I've wondered about.

If you have a stack with one card, far as I can tell both of the 
following work, but shouldn't the second one fail?

get fld "Seaweed" of cd "Aquaplants" of stack "Waterbabies"
get fld "Seaweed" of stack "Waterbabies"

If no card is specified, what exactly does it do?   Is it an 
"undocumented feature" that it catches your error in forgetting to 
specify a card?

Just something I've wondered about every time I caught a piece of 
code where I'd forgotten to specify a card, and the code still worked.

Shari
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