[SOLVED] Experience with SLL file type, maybe its a Serena or Synergex PVCS file?

Experience with SLL file type, maybe its a Serena or Synergex PVCS file?

I have a set files with extension .sll (not ssl) that we are trying to figure out (we have permission to do whatever with them)

These are supposed to be Smalltalk files, but from what I can tell these might be Serena PVCS files (with Smalltalk content?) as the first line (editing out binary stuff looks like):

VOL1000 ... 06/10/2005 15:03:50b ... Repository: r004 (PVCS)

which makes me think that these could be Serena (or Synergex?) PVCS files. Does anyone have experience with this file type? Am I correct in this? Is there a way to parse them?

I have a query into Serena asking the same questions, but from my web searches it seems that this software is pricey and not very good either.

THANKS!

Solution

The files are from Visual Smalltalk. They contain binary code, objects and perhaps sources for the code. See the answer from @Hermán for a better explanation.

The referencen to "PVCS" suggest that they were created with the Enterprice editions (Visual Smalltalk Enterprice). This product used PVCS for the (built-in) version control system.