Each package tag under the packages tag describes one package. It contains at most 2 tags: the
units tag and the descriptions tag.
The package tag has 3 attributes:
     
- 
name 
 - This attribute specifies the name of the package. This attribute is mandatory.
     
 - 
output 
 - This attribute contains the default output name for the package. This attribute is
     optional.
     
 - 
content 
 - The content attribute specifies the name of the content file to write for this package.
     This attribute is optional. No file will be written if it is omitted.
 
Example:
                                                                            
                                                                            
<package name="rtl" output="rtl" content="rtl.xct">