When opening a document in WYSIWYG mode, Serna does its best to determine the document type and open the document with an appropriate document template applying appropriate XML metadata, such as encoding, XSL Stylesheet and XML Schema.
All DITA documents are opened by default with the DITA V1.1 template. To open a DITA 1.0 document with a DITA 1.0 template, follow the instructions.
To open an existing document in WYSIWYG mode, do the following:
To call up the
Open Document Dialog, choose , or click the
Open Document button
on the toolbar, or press
Ctrl-O.
In the Open Document Dialog, do the following:
Figure 1. Open Document Dialog.

For instructions on how to set types to be offered, see Specifying File Types For Opening In Serna.
Serna will guess the document type and open the document.
If Serna fails to guess the document type, the message that no document template matched the document will appear.
Figure 2. No matched document template found.

If you are opening a document type unknown to Serna, click the Use Default button.
Serna will open the document with the default template.
If you are opening a document type known to Serna, click the Choose Template button.
The Choose Document Template Dialog will appear, where you can explicitly choose the document category and template.