The document "edit" display type (used to display properties in edit mode) always add {pre}s

There are several display types used to display document's properties : view, hidden, rendered, etc.
The edit type is protected with

{pre} but in one case – having upper level {pre}

s since radeox doesn't handle multiple levels of

{pre}

s – we can need to avoid them. This is the goal of editnopre