code: function anim( _line ){
  
      var msg = messages[ _line ];
  
      lcd.cursor( _line, 0 );
  
      if( msg.progress === 0 ){
  
          lcd.print( msg.msg );
  
          progress( _line );
  
          (function( _line ){
              timeout = setTimeout(function(){
                  anim( _line )
              }, anim_settings.firstCharPauseDuration );
          })( _line );
  
      }else{
  
          lcd.print( msg.msg.substr( msg.progress ) );
  
          progress( _line );
  
          (function( _line ){
  
              var time = anim_settings.scrollingDuration;
  
              if( messages[ _line ].progress === 0 ){
                  time = anim_settings.lastCharPauseDuration;
              }
  
              timeout = setTimeout( function(){
                  anim( _line );
              }, time );
  
          })( _line );
  
      }
  }
docs: Animate the text on screen
  
  @param (int) _line - Line index