SET_INDENT(".. "); // sets the current indent string to ".. "
~ "Person Details:"; // ~ emits a single message
~ NL; // NL emits a newline
~ IND ++ "Name: " ++ person.name ++ NL; // ++ concatenates the values
~ IND ++ "Age: " ++ person.age ++ NL; // ++ automatically converts the values to strings
~ IND(2); // custom operator IND indents the message
~ person.age > 18 then_emit("- Adult"); // custom operator then_emit emits a message conditionally