History settings
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   Using the 'Lines' Slider gadget you may adjust the maximum number of
lines to capture during a session.

   With the 'Entries' Cycle gadget you may set the output format for
the history.  You may choose from the following formats :

Input & Ouput
     Within the left column you`ll see the expression entered. In the
     right column there`ll be the result for that expression.

Output & Input
     Is the opposite to the above

Input
     Will only show your input expression

Output
     Will only show the result