Hi,
if you want to create a simple navigation diagram in WebRatio you can create a Web project and put the pages into a Site View. In order to describe the interactions between pages you can add Flows that join the pages. You can find more details about Site Views, Pages and Flows here:
https://my.webratio.com/learn/learningobject/view-containers-v-72
http://my.webratio.com/learn/learningobject/your-first-web-application-v-72
https://my.webratio.com/learn/learningobject/master-details-v-72
At the end you can generate and save "Diagram Images" related to the model. In this case you can refer to this topic: http://www.webratio.com/forum/question-details/how-can-i-save-a-diagram-as-an-image-file
