Signals Notebook: Can the preview image size be changed to see the contents of the file better

The preview is an auto generated image of the first page of a document, the default size can not be changed. To see the contents with more detail use Full Size view:

1. Browse to the document you wish to preview
2. Click on the arrow next to the name 'View Full Size'
3. The document will be displayed on full size with all contents available for searching and browsing