The following preferences can be changed on the 
      
 General > Editors > Text
      Editors page.
    
| 
             
              Option
             
           | 
          
             
              Description
             
           | 
          
             
              Default
             
           | 
        
|---|---|---|
| 
             
              Undo history size 
           | 
          
             
              This option allows you to set the size of the undo history for
              text editors.
             
           | 
          
             
              200
             
           | 
        
| 
             
              Displayed tab width 
           | 
          
             
              This option allows you to set the displayed tab width for text
              editors.
             
           | 
          
             
              4
             
           | 
        
| 
             
              Insert spaces for tabs 
           | 
          
             
              This option allows you to insert space characters in place of tab
              characters.
             
           | 
          
             
              Off
             
           | 
        
| 
             
              Highlight current line 
           | 
          
             
              This option controls whether or the current line is highlighted
              or not. 
           | 
          
            On | 
        
| 
             
              Show print margin 
           | 
          
             
              This option controls whether the print margin is visible or not.
             
           | 
          
             
              Off
             
           | 
        
| 
             
              Print margin column 
           | 
          
             
              This option allows you to set the print margin column position.
             
           | 
          
             
              80
             
           | 
        
| 
             
              Show line numbers 
           | 
          
            This option controls whether or not line numbers are shown on the
            left side of the text editor. | 
          
            Off | 
        
| 
             
              Show range indicator 
           | 
          
            This option controls whether or not range indicators are shown in
            the text editor. | 
          
            On | 
        
| 
            Show whitespace characters | 
          
            This option controls whether to display whitespace characters in
            text editors. | 
          
            Off | 
        
| 
            Enable drag and drop of text | 
          
            This option controls whether text drag and drop is enabled. | 
          
            On | 
        
| 
            Warn before editing a derived file | 
          
            This option controls whether to warn if a derived file is going to
            be edited. | 
          
            On | 
        
| 
            Smart caret positioning at line start and end | 
          
            This option controls whether the editor automatically positions the
            caret and the start or end of a line. | 
          
            On | 
        
| 
            Show affordance in hover on how to make it sticky | 
          
            This option controls whether to show an affordance in the hover on
            how to make it sticky. | 
          
            On | 
        
| 
            Appearance color options | 
          
            This option controls various appearance colors. | 
          
             | 
        
Here is how the Text Editors preference page looks like:
      