It works for me -- what does the base URL show (in the rounded text control at the top of the window)?
Not sure what you mean by "rounded text control" -- the title bar at the top of the HTML window shows the name I have given to the command, in this case it is "prova"
Let me reiterate: I create a command "prova", input=none, output=show as html. The text of the command is
cat ~/Desktop/myFile.html
The file myFile.html contains the following:
<html><body> <a href="myFile.html#myAnchor"> Go to anchor! </a> text ... (omitted text) ... text text <a name="myAnchor"> I knew you would come here! </a> </body></html>
I run the command, the HTML window appears (with "prova" in the title bar). I click on the link, the window goes blank.
Thank you for any help, Piero