anchor.diff:  * Previous line : k
   * Next line : n
   * Clear the screen, reprinting the current line at the top : C-l
  -* Delete next word to the right of cursor : dw 
  +* Delete next word to the right of cursor : dw
   * Kill the text from the current cursor position to the end of the line : D and d$
   * Kill from the cursor to the end of the current word, or, if between words, to the end of the next word : db
   * Kill from the cursor to the previous whitespace : dB
  
positive.code: import java.io.IOException;
  
  import org.jboss.aesh.console.Console;
  import org.jboss.aesh.console.ConsoleCallback;
  import org.jboss.aesh.console.ConsoleOperation;
  import org.jboss.aesh.console.Prompt;
  import org.jboss.aesh.console.settings.SettingsBuilder;
  
negative.code: * aesh.historysize : specify the maximum size of the history file
  * aesh.logging : specify if logging should be enabled
  * aesh.logfile : specify the log file
  * aesh.disablecompletion : specify if completion should be disabled
  