Hover over and look for Text Editor for Google Drive or a similar connected app.
If you just need a standard word processing document to type in: Go to Google Drive. Click the button and select Google Docs . Click on Untitled document in the top left corner. Type in 21-dec_2 and press Enter to name it. 21-dec_2 - Google Drive
Type your text and save the file to your computer as 21-dec_2.txt . Hover over and look for Text Editor for
If you do not see one, click , search for "Text Editor", and install it. search for "Text Editor"