\\bfseries' tells the typesetter to print it in bold
face, see LaTeX in labels. The result is the following:
But the `text' keyword can do more. When you include the
keywords `along declination' the label becomes a flex.
This is printed along a declination circle as a curved text. It's
especially nice for constellation names. So let's try it out:
text "\\bfseries Swan" at 20.05 49.8 along declination towards SW ;
This `\\bfseries' tells the typesetter to print it in bold
face, see LaTeX in labels. The result is the following: