I am learning about IDL. By following this answers .
I want to know wheather programs deployed using anchor framework only have IDL ? If not how can I fetch the IDL from a cluster not created using anchor.
For eg:
I have deploy a simple helloworld program here on testnet . ( Program ID : 7SKPHGcFDHqK3wbLxiGudZWwajs8ApyHiPiEgD2TYXTq ) . I deploy it following this tutorial
Can someone please show me how can I fetch its IDL ?