Yeah, could be a solidus (fraction slash), which only looks like a slash. From that page: "The solidus can be typed on Microsoft Windows as Alt-8260 and the division slash as Alt-8725."

Although it appears to be lying about that. I couldn't get it to work on a UK keyboard. Charmap has them at U+0002F, U+2044 and U+2215. Pasting them into the BBS edit box results in HTML entities that get escaped and don't display properly.