Tusk offers both line comments and block comments.

Line comments begin with //, and continue to the end of the line. For example…

// A slightly more elaborate program... Writeln('Hello, world!'); Writeln; // Note: no parentheses needed - yay! Writeln('Goodbye');

Block comments begin with (* and end with the next *). For example…

(* An even more elaborate program, printing the first 100 squares *) for var i := 1 to 100 do Writeln(i, ': ', i*i);

Note that Tusk does not support block comments using curly braces; instead, curly braces define IPropBag literals.