If you are in the Command Line Interface, move to the folder where the file was saved and type this command:
txt2tags --target html test.txt
The option --target is followed by the "html" string,
which tells the program to what format your text file will be
converted. The last item is the text filename.
The results were saved to the test.html file and then
the program will show you the "txt2tags wrote test.html"
message. If some error occurred, read the message carefully.
Here is a sample of how it will be shown on your screen:
prompt$ txt2tags --target html test.txt txt2tags wrote test.html prompt$