Hello
If you want to add a file type， You can follow the steps below:
Open Anytxt, click the “+” behind “Go”
Then click “All Files”-> “Add New”-> “Add”->”Select”
Type “test. i” or “test. p ” in the box on the left,
Then click the file type below to select what you need to add, and then click “OK”
In this way, the file type you need is added successfully.