.ETX File Extension
File Type 1TeX Font Encoding File
What is an ETX file?
Font file used by TeX and LaTeX typesetting systems; saved in a plain text format and contains markup that describes how a font is encoded for its appearance; allows font customization for TeX documents.
File Type 2Structure Enhanced Text (Setext) File
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
.ETX File Association 2
ASCII text file format known as "Setext" that is used to distribute information over the Internet; can be opened with EasyView or another Setext viewer; may also be readable with a basic text editor, though the text formatting will be lost.