How can I add a link to another element within the same topic?

You can use the Link icon and manually edit the attributes to insert a link to another element.

Description

I want to link to another element within the same topic.

Solution

Perform the following to insert a link to another element.

Note: This solution requires DITA 1.3 and a 2.x OT.
  1. Add an ID to the element you want to link.
    For example: 
    <p  id="link-para">
  2. Place your cursor where you want to insert the link.
  3. In the Oxygen editor, click Link icon.
  4. Click Cross Reference.
  5. In the Location dropdown list, select the current topic.
  6. In the Select the target element section, select the ID to link to.
  7. Click Insert and close. The xref element is inserted, such as: 
    <xref href="#hqm1517240717943/link-para" format="dita"/>
  8. Right-click the xref element.
  9. Click Edit Attributes.
  10. Edit the href attribute to remove the topic ID and replace it with a period.
    <xref href="#./link-para" format="dita"/>