This is explained in a section of the Sugar Creation Kit page:
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For a virtual appliance based on Ubuntu, see [[Sugar_Creation_Kit#Ubuntu_11.04_sweets-distribution_sugar_0.94|How to install an Ubuntu 11.04 Sweets Distribution Sugar 0.94 virtual appliance]].
There are other virtual appliances based on other distributions, which can be imported into virtualisation software on Ubuntu. See [[Emulator_image_files|Emulator image files]].
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There are other virtual appliances based on other distributions, which can be imported into virtualisation software on Ubuntu.