User Help > Working With Documents > Modifying Content > Copying Content > To copy content within and between documents for the purposes of reuse
  
To copy content within and between documents for the purposes of reuse
When you copy content within the same document, you are performing a standard GUI copy operation. Copying between documents is generally for the purposes of reuse.
If you want to do a standard copy either within a document or to another document, press CTRL+V.
If you want to copy for the purposes of reuse, click Content > Paste Special.
1. Open the applicable document.
2. Select a row or section in the Content pane of the document from which you want to copy and select Content > Copy. The selected row or section is highlighted. Selecting a node to copy from the Content pane results in just the selected items being copied.
3. Select an insertion point in the target segment and select Content > Paste Special to paste the row.
If the copied nodes span multiple segments, the Paste Special window opens. In this window, you specify whether to paste the content items for the purpose of share, reuse, or just a regular GUI copy. The Include Traces checkbox allows you to specify whether to carry over all traces associated with the children of the copied nodes.
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If you do not select a new reference mode, you can change the reference mode at another time using Content > Toggle Share/Reuse. However, you can only change it between Share and Reuse. Author is not a choice.