IVT file extension is for Information title InfoViewer
Similar to IVT
085 - 85x85 dpi display font Ventura Publisher091 - 91x91 dpi display font Ventura Publisher
096 - 96x96 dpi display font Ventura Publisher
0B - Printer font with lineDraw extended character set PageMaker
1 - Unformatted manual page Roff/nroff/troff/groff
10X - Gemini 10x printer graphics file - Bitmap graphics
123 - Lotus123 Data file
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