The INK file extension is used to identify Pantone reference files. INK reference files are raster imaged that store color data related to particular image files. INK files can be edited with the appropriate software.
Textual note or drawing created on a Pocket PC PDA using a digital pen; saved in a proprietary vector image format, which makes it possible to scale the drawing without losing quality.
Digital pen drawing saved using the Inke Markup Language (InkML), an XML file format used to save digitally drawn images and notes; contains a vector graphic stored as one or more sequences of connected points. INK files are used for storing pen strokes and redrawing them using trace functions. They can be resized without losing the quality of the original pen stroke curves since the trace functions interpolate between points.