What: storage - Access and manipulate Microsoft "Structured Storage" files
Who: Pat Thoyts
Where: http://www.patthoyts.tk/tclstorage/index.html 
Description:  This package is an extension that adds the ability to access and 
     manipulate Microsoft's "Structured Storage" files to Tcl. Structured storages are
     used extensively in Windows to provide persistence for OLE or COM components 
     and as a composite file for various applications. The format presents a 
     filesystem-like hierarchy of storages and streams that maps well into Tcl's virtual 
     filesystem model.  .  Notable users of structured storages are Microsoft Word and Excel.