PROPLISTP

Synopsis
PROPLISTP name
PROPLIST? name
Description

Outputs TRUE if the input is the name of a property list, outputs FALSE otherwise.

The name input must be a word.

Example
SHOW PROPLISTP "Helium
false

PPROP "Helium "Symbol       "He
PPROP "Helium "AtomicNumber 2
SHOW PROPLISTP "Helium
true

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