| Extension | File Description |
| .ISML | Uncommon Files |
| .ISN | Uncommon Files |
| .ISOD | Uncommon Files |
| .ISQ | Uncommon Files |
| .ISTG | Uncommon Files |
| .ISTR | Uncommon Files |
| .ISV | Uncommon Files |
| .ISW | Uncommon Files |
| .ISX | Uncommon Files |
| .ISY | Uncommon Files |
| .IT0 | Uncommon Files |
| .IT1 | Uncommon Files |
| .IT2 | Uncommon Files |
| .IT3 | Uncommon Files |
| .IT4 | Uncommon Files |
| .IT5 | Uncommon Files |
| .IT6 | Uncommon Files |
| .IT7 | Uncommon Files |
| .IT8 | Uncommon Files |
| .IT9 | Uncommon Files |
| .ITAL | Uncommon Files |
| .ITALIC | Uncommon Files |
| .ITB | Uncommon Files |
| .itcl | Uncommon Files |
| .ITD | Uncommon Files |
| .ITEMS | Uncommon Files |
| .ITF | Uncommon Files |
| .ITG | Uncommon Files |
| .ITH | Uncommon Files |
| .ITJ | Uncommon Files |
| .ITK | Uncommon Files |
| .ITN | Uncommon Files |
| .ITO | Uncommon Files |
| .ITP | Uncommon Files |
| .ITQ | Uncommon Files |
| .ITT | Uncommon Files |
| .ITU | Uncommon Files |
| .ITV | Uncommon Files |
| .ITY | Uncommon Files |
| .ITZ | Uncommon Files |
| .IU0 | Uncommon Files |
| .IU1 | Uncommon Files |
| .IU2 | Uncommon Files |
| .IU3 | Uncommon Files |
| .IU4 | Uncommon Files |
| .IU5 | Uncommon Files |
| .IU6 | Uncommon Files |
| .IU7 | Uncommon Files |
| .IU8 | Uncommon Files |
| .IU9 | Uncommon Files |
| .IUA | Uncommon Files |
| .IUB | Uncommon Files |
| .IUC | Uncommon Files |
| .IUD | Uncommon Files |
| .IUE | Uncommon Files |
| .IUF | Uncommon Files |
| .IUG | Uncommon Files |
| .IUH | Uncommon Files |
| .IUI | Uncommon Files |
| .IUJ | Uncommon Files |
| .IUK | Uncommon Files |
| .IUL | Uncommon Files |
| .IUM | Uncommon Files |
| .IUN | Uncommon Files |
| .IUO | Uncommon Files |
| .IUP | Uncommon Files |
| .IUQ | Uncommon Files |
| .IUR | Uncommon Files |
| .IUS | Uncommon Files |
| .IUT | Uncommon Files |
| .IUU | Uncommon Files |
| .IUV | Uncommon Files |
| .IUW | Uncommon Files |
| .IUX | Uncommon Files |
| .IUY | Uncommon Files |
| Extension | File Description |
| .IUZ | Uncommon Files |
| .IV-VRML | Uncommon Files |
| .IV0 | Uncommon Files |
| .IV1 | Uncommon Files |
| .IV2 | Uncommon Files |
| .IV3 | Uncommon Files |
| .IV4 | Uncommon Files |
| .IV5 | Uncommon Files |
| .IV6 | Uncommon Files |
| .IV7 | Uncommon Files |
| .IV8 | Uncommon Files |
| .IV9 | Uncommon Files |
| .IVA | Uncommon Files |
| .IVB | Uncommon Files |
| .IVG | Uncommon Files |
| .IVH | Uncommon Files |
| .IVI | Uncommon Files |
| .IVJ | Uncommon Files |
| .IVK | Uncommon Files |
| .IVL | Uncommon Files |
| .IVM | Uncommon Files |
| .IVN | Uncommon Files |
| .IVNU | Uncommon Files |
| .IVO | Uncommon Files |
| .IVP | Uncommon Files |
| .IVQ | Uncommon Files |
| .IVU | Uncommon Files |
| .IVV | Uncommon Files |
| .IVW | Uncommon Files |
| .IVWD | Uncommon Files |
| .IVWL | Uncommon Files |
| .IVWR | Uncommon Files |
| .IVX | Uncommon Files |
| .IVY | Uncommon Files |
| .IVZ | Uncommon Files |
| .IW0 | Uncommon Files |
| .IW1 | Uncommon Files |
| .IW2 | Uncommon Files |
| .IW3 | Uncommon Files |
| .IW4 | Uncommon Files |
| .IW5 | Uncommon Files |
| .IW6 | Uncommon Files |
| .IW7 | Uncommon Files |
| .IW8 | Uncommon Files |
| .IW9 | Uncommon Files |
| .IWA | Uncommon Files |
| .IWB | Uncommon Files |
| .IWC | Uncommon Files |
| .IWE | Uncommon Files |
| .IWF | Uncommon Files |
| .IWG | Uncommon Files |
| .IWH | Uncommon Files |
| .IWJ | Uncommon Files |
| .IWK | Uncommon Files |
| .IWL | Uncommon Files |
| .IWM | Uncommon Files |
| .IWN | Uncommon Files |
| .IWO | Uncommon Files |
| .IWP | Uncommon Files |
| .IWQ | Uncommon Files |
| .IWR | Uncommon Files |
| .IWR_BAK | Uncommon Files |
| .IWT | Uncommon Files |
| .IWU | Uncommon Files |
| .IWV | Uncommon Files |
| .IWW | Uncommon Files |
| .IWX | Uncommon Files |
| .IWY | Uncommon Files |
| .IX0 | Uncommon Files |
| .IX1 | Uncommon Files |
| .IX3 | Uncommon Files |
| .IX4 | Uncommon Files |
| .IX5 | Uncommon Files |
| .IX6 | Uncommon Files |
| .IX7 | Uncommon Files |
