BACKGROUND-HIGH, BACKGROUND-LOW, and BACKGROUND-STANDARD Phrases

{BACKGROUND-HIGH    }
{BACKGROUND-LOW     }
{BACKGROUND-STANDARD}

1. Specifying BACKGROUND-HIGH causes the background color to be shown in high-intensity. BACKGROUND-LOW causes it to be shown in low intensity.
2. BACKGROUND-STANDARD causes fields and controls to use the current subwindow's background intensity. When a window is created, BACKGROUND-STANDARD causes the window to use the default background intensity for the host system. See the BACKGROUND_INTENSITY runtime configuration variable in Appendix H for more details.
3. If no background intensity is specified, the current subwindow's intensity is used.
   Note: Most character-based systems cannot control the background intensity.