When you attach an image file (of type jpg, png, etc.) and then click on that attachment, the image is opened in a Java Script panel embedded within RMsis.
However, when you click on attachments of type other than image like a word document or a PDF file, it can not be opened within RMsis.
However, you can configure your browser or OS to open these files in default applications after the files are downloaded.
You can follow the steps mentioned below for configuring default applications to open downloaded files for different browsers or OS :