dictionary Method select
Send aMessage for every association within the dictionary
passing each data item associated with the association as a
A new dictionary is created and returned in anewdictionary.
aMessage should be a CallBack pointing to a method which
expects a data item as a parameter and will return a pic x comp-5.
If the CallBack returns True (that is 1), then that association
is placed in the new dictionary.
For more information see the topic Collection Iterator Methods
in the on-line documentation.