Run this add-in, and the list of all hidden elements in the active view will show up.

By checking the desired elements, you will be able to unhide them all at once.

The installer that ran when you downloaded this app/plug-in from Autodesk App Store will start installing the app/plug-in. Or, simply double-click the downloaded installer to install the app/plugin. You may need to restart the Autodesk product to activate the app/plug-in. To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer, and select the "Uninstall" button. Or, click Control Panel > Programs > Programs and Features (Windows 7/8.1/10/11) and uninstall as you would any other application from your system.

It is possible to insert this add-in in your custom tab.

Find the folder where is installed the add-in (typically C:\ProgramData\Autodesk\ApplicationPlugins\pglUnhideElements.bundle)

In the \Contents\Resources folder, open the file TabName.txt.

Then, write on the first line of the document the name of the tab you want to insert the add-in panel in.

If the name of the tab does not exist yet, it will be created.

If you type in "default", the add-in will be inserted in the "Add-Ins" tab.

It is not possible to identify the linked elements which are hidden in the view. The Autodesk® Revit® API does not provide access to this piece of information yet.