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Lets start with viewing AIDA objects. You can either create them with the AIDA examples, the org.lcsim examples or you can load an existing AIDA file with File->Open File... in the menu.
All AIDA objects are arranged in trees. You can have many trees open at the same time. Trees are represented as 
Saving in various graphics formats (e.g. PNG, EMF, JPG, etc.)
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