To further facilitate the operation of the programmer, means are provided to record all actions of an operator, whether this concerns the selection of objects on the display, the execution of a tests function or {HEAD ~ the modification} of {TAIL ~ a parameter value} 
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To further facilitate the operation of the programmer , means are provided to record all actions of an operator , whether this concerns the selection of objects on the display , the execution of a tests function or { HEAD ~ the modification } of { TAIL ~ a parameter value }
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