How to export pages and sub pages

hi, can u pls let me know how to export the all tha pages together.
eg-i have created one page Aircraft Control and in that i have created two sub pages so how can i export the Aircraft control page and their subpages.

Hi, see http://platform.xwiki.org/xwiki/bin/view/Features/Exports#HXARExport

link broken

Indeed, there have been some broken links caused by moves a long time ago. The current location for this specific documentation is https://www.xwiki.org/xwiki/bin/view/Documentation/UserGuide/Features/Exports#HXARExport.