It will fail if undoing the edit would conflict with later edits. For example, if edit 1000 adds a paragraph and edit 1005 modifies that paragraph, it will be impossible to undo edit 1000 automatically. In this case, you must determine how to resolve the problem manually.
Vous avez entré un nom de page invalide, avec un ou plusieurs caractères suivants :
< > @ ~ : * € £ ` + = / \ | [ ] { } ; ? #
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