In the body of document, I often have a heading such as this:

\subject{{\bf Hymn 387} \hfill {\it The Lord's my Shepherd}}

When it arrives in the Table of Contents, the bold and italic have been
stripped off.

My question is: How do I copy to ToC the formatting as well as the content
of the text?

I would be grateful for an answer, or to be pointed to where I could learn
more.

Thanks in advance,
Calum MacLeod