"Example for interactive mode"
"The 16 types of logic gates connected to the same inputs. Top input is A,
bottom input is B. Check correctness through the output bit patterns."

                    "FALSE"
 ii
 ii*******************
    *                    *oo
 ii*+*****************    oo
 ii * *
    * *             "AND"
    * *
    **+***************]*
    * *                *]*oo
    +*****************]*  oo
    * *
    * *             "A and not B"
    * *
    **+***************]*
    * *                *]*oo
    +*****************>*  oo
    * *
    * *             "A"
    * *
    **+*****************
    * *                ***oo
    +*****************    oo
    * *
    * *             "B and not A"
    * *
    **+***************>*
    * *                *]*oo
    +*****************]*  oo
    * *
    * *             "B"
    * *
    **+***************
    * *                ***oo
    +*******************  oo
    * *
    * *             "XOR"
    * *
    **+***************>r
    * *                r>*oo
    +*****************>r  oo
    * *
    * *             "OR"
    * *
    **+***************>*
    * *                *>*oo
    +*****************>*  oo
    * *
    * *             "NOR"
    * *
    **+***************>*
    * *                *]*oo
    +*****************>*  oo
    * *
    * *             "NXOR"
    * *
    **+***************>r
    * *                r]*oo
    +*****************>r  oo
    * *
    * *             "not B"
    * *
    **+***************
    * *                 **oo
    +*****************]** oo
    * *
    * *             "B implies A"
    * *
    **+***************>*
    * *                *>*oo
    +*****************]*  oo
    * *
    * *             "not A"
    * *
    **+***************]**
    * *                 **oo
    +*****************    oo
    * *
    * *             "A implies B"
    * *
    **+***************]*
    * *                *>*oo
    +*****************>*  oo
    * *
    * *             "NAND"
    * *
    **+***************]*
    * *                *>*oo
    +*****************]*  oo
    * *
    * *             "TRUE"
    * *
    **+***************
    * *                ]**oo
    +*****************    oo


"16 logic gates in 1 unit"

 "Inputs"  "Operation" "Out"
  ii ii    ii ii ii ii  oo
  ii ii    ii ii ii ii  oo
   *  *     *  *  *  *  *
   *  *     *  *  *  *  *
   *  *     *  *  *  *  *
   *  **]*  w  *  *  *  *
   *  *  **>***+**+**+*]*
   ***+*]*     *  *  *  *
   *  *        *  *  *  *
   *  **>*     w  *  *  *
   *  *  *****>***+**+*]*
   ***+*]*        *  *  *
   *  *           *  *  *
   *  **]*        w  *  *
   *  *  ********>***+*]*
   ***+*>*           *  *
   *  *              *  *
   *  **>*           w  *
   *  *  ***********>**]*
   ***+*>*
   
