&dBHP 2648a Display Enhancements

esc & d @     123456789     normal
esc & d A     &dA123456789&d@     blink
esc & d B     &dB123456789&d@     inverse
esc & d C     &dC123456789&d@     blink + inverse
esc & d D     &dD123456789&d@     underline
esc & d E     &dE123456789&d@     blink + underline
esc & d F     &dF123456789&d@     inverse + underline
esc & d G     &dG123456789&d@     blink + inverse + underline
esc & d H     &dH123456789&d@     dim
esc & d I     &dI123456789     &d@dim + blink
esc & d J     &dJ123456789&d@     dim + inverse
esc & d K     &dK123456789&d@     dim + blink + inverse
esc & d L     &dL123456789&d@     dim + underline
esc & d M     &dM123456789&d@     dim + blink + underline
esc & d N     &dN123456789&d@     dim + inverse + underline
esc & d O     &dO123456789&d@     dim + blink + inverse + underline