Open eCTD Application/Sequence
Click the 'Open' button on HOME window.
The opening eCTD application/sequence displays default under Table of Contents View in eCTD View Window.(About how to switch views, please click here: eCTD Views)
On eCTD View Window, click the menu "File" can back to HOME window.
If opened any eCTD then back to HOME window, it will show Return button . Click the Return button
will back to the eCTD View window and show the last opened eCTD.
Double click the eCTD from "Catalog"/"Recent" and "Pinned" pane can open the eCTD.
OR
Right-click eCTD from "Catalog"/"Recent" and "Pinned" pane and select "Open" option to open the eCTD.