You can select to either show or hide an algorithm element info and order on the Scene by checking / unchecking the Show element info and Show order items in the View Mode menu (to open the menu select either View Mode toolbar button or select Actions ‣ View Mode).

On the image below you can see an ORF element when the both items are checked:

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     <img src="/wiki/download/attachments/4686222/Changing Algorithm Element Appearance.png"/>
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</center>

See also the Setting Order of Algorithms Execution section.