groff fonts in 4.7.6

[maouinin]

Hello. I have been using TinyCore off and on for some time. Just recently I decided to try using groff in Tiny Core instead of in ubuntu like I have been doing. Initially, all went well until I tried to use italics and bold fonts -- no go. I am wondering if this is simply an environmental thing or if I will need to reinstall the fonts.  I appreciate any help anyone can give.