Mathcad is a calculator, not a graphics package. If you want to draw pretty pictures do so in a graphics application and include the result in the Mathcad sheet. There are varius ways to include a picture in a Mathcad sheet. Some put the actual picture in the sheet, some just have a link to the image file. Your comments suggest that you are using the insert picture from the insert menu. That inserts a picture viewer. That is a component that takes a string parameter (a file name) and displays the contents of that file. As such there is only a link to the file in the Mathcad sheet, the file is read whenever the picture viewer is evaluated. If the file is lost, there is no picture. Because the input to the picture viewer is just a string expression, there is no browse within the viwer itself. If you want a browse capability Xavier posted, some time ago in the collaboratory, some scripted components for general file browsing. That can be used with the picture viewer to select a file to be viewed. For including diagrams in a sheet I would suggest embedding the pictures. Simplest is to just paste the picture into the sheet. For normal line diagrams, built using some form of vector graphics package, pasting as a picture (metafile) is best. You can also insert a picture file as an object (insert object from the insert menu). The usefulness of this construct may depend on the availability of the application constructing the picture. There is also a bug in that one type of picture object (not sure eactly which) does not maintain its correct position on the sheet if some Windows parameters are changed.
