Built-in Constants

Also known as Intrinsic Constants.
In addition to literal and symbolic constants VBA also has a huge range of built-in constants.
Any built-in constants are examples of symbolic constants and generally start with the characters vb.

VBA.Constants.vbBack 
VBA.Constants.vbCr 
VBA.Constants.vbCrLf 
VBA.Constants.vbFormFeed 
VBA.Constants.vbLf 
VBA.Constants.vbNewLine 
VBA.Constants.vbNullChar 
VBA.Constants.vbNullString 
VBA.Constants.vbObjectError 
VBA.Constants.vbTab 
VBA.Constants.vbVerticalTab 

You should try and use the built-in constants rather than the values they represent because the value may change in future versions of VBA.
The constants are also more intuitive and easier to change at a later date, eg vbNewLine = Chr$(13).

Complete List

For a complete list of all the VBA constants refer to the Enumerations > VBA Constants page.