This feature makes it even easier to use object-oriented techniques to develop GUI applications. The second major development for MetaCard 2.0 was the isolation of all OS-specific routines into separate modules. This greatly simplifies the job of porting MetaCard to other operating systems. Support for Windows 3.1 under Win32s was added for the 2.1.1 release in August 1997. The 2.2 release added support for the Macintosh.
Stacks are portable to different platforms without requiring recompiling or other preprocessing.
In most cases, all that will be required when first moving a stack to a new platform is to make minor adjustments in object sizing and spacing to compensate for the fact that fonts are slightly different on each platform. After making these changes the stack can be used on all platforms without further modifications. How MetaCard is marketed and sold MetaCard is sold primarily direct from MetaCard Corporation. Installation of a software license key enables the full functionality of the product. This includes free unlimited technical support via email.