| Multi columns | (Assembly pane only.) Lets you select multiple columns to display in the Assembly pane. By default, only actor names are displayed. | 
| Available properties | Specifies which properties you can select: 
Properties - Lists Composer properties, such as color and opacity.
Meta-Properties - Lists CAD and user-defined properties.
Evaluated Properties (BOM tree only) - Lists computed values, such as 
Qty (Bom.quantity).
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| Move Down  | Moves the selected property down in the list, which moves the corresponding column to the right. | 
| Move Up  | Moves the selected property up in the list, which moves the corresponding column to the left. | 
| Rename  | Renames a column. To rename a column, select a column, click the button, and type a new name. Tip:
		 You can also rename a column by selecting the property and pressing 
F2. | 
| 
  
 | Adds displayed columns by moving the properties selected under 
Available properties to 
Displayed properties. | 
| 
  
 | Removes displayed columns by moving the properties selected under 
Displayed properties to 
Available properties. | 
| Display common root | (Available for BOM tree only. Applicable to string properties and meta-properties only.) Displays the shared initial string, if any, when multiple actors have the same BOM ID.
For example, if 
Bolt_1, 
Bolt_2, and 
Bolt_3 have the same BOM ID, the 
Name (Actor.Name) property displays 
Bolt_. When the option is cleared, 
Name (Actor.Name) has no value. Note:
    	 This option is not global for all columns. Set this option for each column whose corresponding property supports it.
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| Load | Loads a Composer tree configuration (.smgTreeConfig) file, which contains column configuration information. | 
| Save | Saves the column configuration as a Composer tree configuration (.smgTreeConfig) file. | 
| Set as Default | Sets the current column configuration as the default for new documents.
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