Scene_Query.cpp is a basic example plugin. This wiki page is intended as a walkthrough of the code in order to help you better understand the SDK.
When installed, Scene_Query adds two plugins to modo:ResetScene and HardReset. ResetScene opens a file dialog from which you will choose a file; the current scene will then be closed and the chosen file loaded. HardReset will close the current scene then take the last selected file and load it. To change the file HardReset loads, run ResetScene and choose a different file.