Added easter egg

reporting/markslider

@@ -172,6 +172,8 @@ exit
 * Give the markdown file as argument
 * Move to the next slide with key 1, arrow right, space.. 
 * Move to the previous slide with key 2, arrow left
+   * Remote presentor USB dongles may work too.
+* Move a highlighter line with up/down arrows
 * Exit with q or x
 * Hide menu with m
 * The numbers on the right show the current
@@ -211,6 +213,7 @@ Object  Area  Perimeter
      |+   *   + *     ***      +       ***     **    * +|
  -15 ++----*--+--*----+-**-----+-----**+------*+----*--++
      -30     -20     -10       0       10      20      30
+$( gnuplot -d -e "set term dumb 60 15 enhanced; set parametric; set trange [0:10*pi]; set yrange[-2*pi:2*pi]; set xrange[-4*pi:4*pi]; plot t*cos(t), t*sin(t);" )
 
 # Hints: ${R}Co${Y}lo${G}rs
 
@@ -229,8 +232,7 @@ Object  Area  Perimeter
                     ┌──────┐ 
 * Get creative with │Ascii!│ 
                     └┬────┬┘ 
-* Run any command with pressing "e" on a slide with
+* Run any command by pressing "e" on a slide with syntax: 
-  syntax beginning a row: 
     * "$ ( command )" to print the output
     * "& ( command )" run process in background