Operator Scope of Action:
Operator First Added:
attribute can be any expression, but is typically an attribute.
constructs a set with the name of each child of the note.
does the same for children of the note 'books' inside 'agents'.
collect(children,$Width * $Height)
collects a series of numerical values of each child's map icon height/width in Tinderbox map units. Thus if a child had a $Width of 4 and $Height of 2, the collect() result for that item would be 8.
If a list of unique values is required - i.e. a set rather than a list, simply pass the output to a Set attribute. Thus if:
$MyList = collect(children,$FavFruit) $MyList is "Apples;Oranges;Pears;Apples"
$MySet = collect(children,$FavFruit) MySet is "Apples;Oranges;Pears;"