The Guide shows you Step-by-Step How to Install and Getting-Started with the Latest Eclipse 2023-03 R IDE i686 Standard IDE for Linux Xubuntu 13.04 Raring Ringtail Xfce i386 Desktop.
There is the Possibility also to Install the Eclipse Platform via apt-get But the Xubuntu 13.04 Raring apt Repositories are still Back to Eclipse 3.8 Flavor.
So at the Moment if you want Install the Latest Release of Eclipse 2023-03 R Build on Linux Xubuntu 13.04 you will Need to Download and Install Eclipse 2023-03 R Release for Linux.
The Contents and Details are Essentials and Give Focus only to Instructions and Commands.

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Download Eclipse 2023-03 R IDE for Linux:
Eclipse 2023-03 R IDE Standard Linux