My understanding is that bold text on a VT100/VT102 is more intense than ordinary text; I might say that normal text is 80% grey and bold text is 100% grey=pure white, for the sake of illustration.
Assuming that's correct, what happens when bold and reverse video are combined? Does the white background behind the black text change intensity or not?
I've tried this in gnome-terminal and xterm:
$ echo -e '\033[7mxxxxx\033[1mxxxxx\033[m'
and on xterm the white background to all the 'x's is the same shade:
What happens on the real hardware? Was it common for programs to use bold reverse video at all?