Formatting usage messages

Question

If you take a look at the Combinatorica package in Mathematica8 in (mathematicapath)/AddOns/LegacyPackages/DiscreteMath/Combinatorica.m you wi

Answer 1

The way to embed style information in a String expression is to use linear syntax. For a box expression such as:

StyleBox["foo", FontSlant->Italic]

You can embed this inside of a String by adding \* to the front of it and escaping any special characters such as quotes:

"blah \*StyleBox[\"foo\", FontSlant->Italic] blah"

This should work for any box expression, no matter how complicated:

"blah \*RowBox[{SubsuperscriptBox[\"\[Integral]\",\"0\",\"1\"],RowBox[{FractionBox[\"1\",RowBox[{\"x\",\"+\",\"1\"}]],RowBox[{\"\[DifferentialD]\",\"x\"}]}]}] blah"