HP 50G

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right arrow key (™) to select the underline in front of the options _Clock or
_Analog. Toggle the @@CHK@@ soft menu key until the desired setting is achieved.
If the _Clock option is selected, the time of the day and date will be shown in
the upper right corner of the display. If the _Analog option is also selected, an
analog clock, rather than a digital clock, will be shown in the upper right corner
of the display. If the _Clock option is not selected, or the header is not present,
or too small, the date and time of day will not be shown in the display.