this is a lowlevel LabView-File-Format reader/writer "written" in LabView.
Features:
- open .vi file [version 4 up to 2016] and read main file structure
 - decompress blocks
 - calculate/overwrite file password
 - read version information [vers-block]
 - read password information [BDPW-block]
 - save .vi file
 

