Confluence Docs 3.1 : How to Make Confluence Open a New Tab when Clicking on the Attachments Link
This page last changed on Jun 22, 2009 by aatkins.
Modifying the template file in confluence-attachments-plugin-x.x.jar (in this case, I try on confluence-attachments-plugin-2.10.jar). Please edit attachmentsmacro.vm file. This file is located in confluence-attachments-plugin-2.10.jar file. Extract this file by using the [Editing files within .jar archives guide] guide.
If you are able to extract it successfully, you can locate to attachmentsmacro.vm file and find the following lines: