Switch to low intensity colors.
Source position: crth.inc line 92
procedure LowVideo;  | 
LowVideo switches the output to non-highlighted text. (It clears the high intensity bit of the video attribute)
For an example, see HighVideo
None.
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Set text color.  | 
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Set text background.  | 
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Switch to highlighted text mode.  | 
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Return to normal (startup) modus.  |