sequencedcollection Method select
Return a new collection of the same species as this sequenced
aMessage should be a CallBack pointing to a method which
expects an element as a parameter and will return a pic x comp-5.
"select" passes each element of the collection to the CallBack.
If the CallBack returns True (that is 1), then the element is
placed in the new collection.
For more information see the topic Collection Iterator Methods
in the on-line documentation.