There is a "enter name" button next to the "tools" button in the log menu for this.
Good to know, thanks ! BTW, what about the graphical front-ends ? I wonder whether they show the prompt too...
Normal GPX files normally don't have the needed routing info, so its not possible to use them for a meaningful turn-by-turn navigation.
I have summarized the possible improvements to a new ticket. Did I forget something ?