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?DUP Search:

In Stack Words in TurboForth Kernal

Word Name: ?DUP
Type: Standard word
Data Stack Signature: a -- a | a a
Return Stack Signature: --
Availability: V1.0  V1.1  V1.2
Description:

Duplicates the topmost item if it is not 0.

Example:

none

Comment:

none

See Also: DUP 

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