The following preferences can be changed on the 
   General > Editors >
  Text Editors preference 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
           
         | 
      
| 
           
            Remove multiple spaces on backspace/delete 
         | 
        
           
            This option allows you to set whether hitting backspace or delete in text editors deletes only 1 space
            character (if  
        off) or deletes as many space characters as defined in Display tab
            width (if on).
           | 
        
           
            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
           
         | 
      
| 
           
            Allow editors to override the margin column 
         | 
        
           
            This option tells whether editors are allowed to override the print margin column.
           
         | 
        
           
            false
           
         | 
      
| 
           
            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 | 
      
| 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 | 
      
| 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 code minings for problem annotations: | 
        This option controls for which sevirities the problem markers should be displayed as code
        minings in text editors. | 
        None | 
      
| Maximum annotations shown | 
        This option controls the maximum number of problem annotations to show as code mining (too high
        number can have negative impact on performance). | 
        100 | 
      
| Appearance color options | 
        This option controls various appearance colors. |