Revert "improved edition of example"

This reverts commit 4f867bfa64b04e17ea7197d1276606218f380a7d.
Revert "Revert "improved edition of example""

This reverts commit 131c2d6f6c27d8c3a6688c91214452842535aa02.
Revert "Revert "Revert "improved edition of example"""

This reverts commit 9488919cd1dec9fe48e8007f5541f347cf9f64d9.