In all correspondence views there is a column headed with a speech bubble symbol ( ).
If a correspondence document is marked with this symbol, it indicates that there is a correspondence thread.
This means that there are other correspondence documents that are linked to this document e.g. as a reply or a forward.
![Speech bubble in correspondence](../../assets/correspondencethread01.png)
In order to display the whole correspondence thread you simply need to click the speech bubble displayed in the row of the respective PIRS document. A new tab will open, showing the entire correspondence linked to the selected document. By default the view will display an illustration of the correspondence as a thread but, as indicated in the following screenshot, you also have the option to display the documents according to the timeline that they were created in.
![Display as thread](../../assets/correspondencethread02.png)
Furthermore you will have the opportunity to access the content of each listed document by extending the respective content field included in the display of each document.
The attached files can also be open out of this view by simply clicking the attachment symbol .
In case a correspondence was sent by someone else and not the author himself, you will also be able to track that information within the correspondence thread (regard the marked area in the screenshot above as example).