Computer Graphics Metafile (CGM) is free, platform-independent, international standard metafile format for storing and exchanging vector graphics (2D), raster graphics, and text. CGM uses an object-oriented approach and many function provisions for image production. CGM uses these object-oriented characteristics for remolding graphical elements to render an image. A metafile contains necessary information that defines other files. In CGM, a text-based source file contains all graphical elements that can be later compiled into a binary file.
A file with .wmz extension is an intermediate level file generated by older versions of Microsoft Office applications. It can contain embedded equations, clip art, or other vector graphics.
You can also convert CGM into many other file formats. Please see the complete list below.