We recommend using Visual Studio 2017



The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com.

The latest version of this topic can be found at EXTERN (MASM).

Defines one or more external variables, labels, or symbols called name whose type is type.

   EXTERN [[langtype]] name [[(altid)]] :  
type [[, [[langtype]] name [[(altid)]] :type]]...  

The type can be ABS, which imports name as a constant. Same as EXTRN.

Directives Reference