The Rise and Fall of Commercial Smalltalk post 
> As Gilad describes, extracting an application from its development environment could be tricky. But both Team/V and Envy included tools to help developers do this. Team/V support the deployment of applications as Digitalk Smalltalk Link Libraries (SLLs) which were separable virtual image segments that could be dynamically loaded. Envy, which originally was designed to generate ROM-based embedded applications, had rich tools for tree-shaking a deployable application from a development image.