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| GPL - General Public License |
| The GPL is a copyleft license, which means that it guarantees end users the freedom to run, study, share, or modify the software, but if you distribute a derivative work or modification, you must provide the source code to those recipients under the same or equivalent license terms — there is no requirement to publish anything to the public at large. The GPL was the first copyleft license available for general use. |
| The GPL guarantees end users four core freedoms: |
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