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- Verify that following icons are working as expected:
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= Opens file chooser 
= Open Genome from File action-
= Save Image action -
= Opens Preferences window -
= Quits IGB -
= Opens IGB User's Guide in Web browser -
= Scrolls the view left or right -
= Starts Auto-scroll action -
= Optimizes Stack Height for ALL annotation tracks -
= Optimizes Stack Height for SELECTED annotation tracks -
= Opens Change Stack Height window for SELECTED annotation tracks -
= Shows/Hides Data Tooltips -
= Returns to the IGB Home Screen
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