IETM Viewer is software that is used to see the manuals that are converted into a database. Level 1,2 does not need any IETM viewers because they are PDF files. Level -3 is HTML based. A complete manual is converted into HTML/XML files page-wise like we create a website. Images, illustrations will be placed in a folder. HTML/text, Images, Illustrations, Images,etc are called media assets. Using IETM Viewer, one can see all the files in a structured way. IETM Viewer is a piece of software that is used to view the documents and also used for interactivity and switch between topics, subtopics, cross reference, hyperlinks, etc. In the case of Level -4 this viewer is very powerful and gives full power to the user for quick access.