.RST File Extension
File Type 1reStructuredText File
Text file that contains code written in the reStructuredText markup language; can apply basic styles and formatting to text documents; used for in-line program documentation (primarily for Python), and for creating standalone documents and simple Web pages.
File Type 2IDRISI Raster Image
This file is saved in a binary format, which requires a specific program to read its contents.
GIS image created by IDRISI Taiga, a GIS imaging application; stores a raster image, commonly representing the geographical terrain captured in an aerial photo via remote sensing techniques; used in the process of analyzing and visualizing spatial data.
NOTE: IDRIS raster images formerly used the ".img" extension. However, Clark Labs changed the extension so that the file type would not be confused with other file types that use the ".img" extension.