Writing html in scribble
This HTML: flagge-0544.gif from 123gifs.euFlag of Brazil

<img style="border:0;" src="http://www.123gifs.eu/free-gifs/flags/flagge-0544.gif" alt="flagge-0544.gif from 123gifs.eu">
Flag of Brazil
</img>
should be inserted as follows:
@(tg img
     #:attrs ([style "border:0;"]
              [src "http://www.123gifs.eu/free-gifs/flags/flagge-0544.gif"]
              [alt "flagge-0544.gif from 123gifs.eu"])
     "Flag of Brazil")