There is only one file type that uses the .TWZIP extension:
theWord Compressed Archive Module
File used by theWord Bible software; stores the compressed version of a .TWM module and allows modules to be distributed with a reduced file size; may use one of several compression formats, including .ZIP, .RAR, and .7Z.
To install a compressed archive module, decompress the file and then place the resulting TWM file in the appropriate subdirectory within the C:\ProgramData\The Word\ directory.
Updated: March 20, 2012