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+A persistent object is an object that survives reboot.
+On Unix, files and directories are persistent but
+processes and file descriptors are not. EROS is
+an example of an orthogonally persistent system:
+processes and capabilities also survive reboot. To a
+process, it generally only looks as if it had not been
+scheduled for a long time; the rest of its environment
+remains essentially the indistinguishable. \ No newline at end of file