How can I add a special character (for example, trademark) to a DITA file?

Contributing author: Deborah Pickett

Date: April 18, 2007

The <tm> element is recommended where you can use it. For example:
<tm trademark="DB2" tmtype="tm" tmclass="ibm">DITA</tm>
The tmtype for registered trademark is "reg", and for service mark it is "service".
The Unicode character entities for common symbols are:

For more information about Unicode symbols, see