With Filestar you get 18 different skills for working productively with TI Bitmap (.73i) files.
About .73i
Name
TI Bitmap
Extension
.73i
Format
Binary
Category
Raster Image
Developer
Texas Instruments
Description
A 73i (TI Bitmap) is a graphics file format used by Texas Instruments calculators. It stores bitmap images, which are composed of pixels, and can be used to create graphics on the calculator's display.