444: Highlights

If you want to create a collection, then instantiate one of the following patterns:

Array new: size 
OrderedCollection new 
Bag new 
Set new 
SortedCollection new

If you want to iterate over the elements in a collection, then instantiate the following pattern:
```
collection do: [:element | ... element ...] 
```
If you have an ordered collection, and you want to store an expression's value into the ordered collection, then instantiate one of the following patterns:
```
ordered collection addFirst: expression 
ordered collection addLast: expression 
```
If you have values stored in an ordered collection, and you want to retrieve one of those values, then instantiate one of the following patterns:
```
ordered collection first 
ordered collection last 
```
If you have values stored in an ordered collection, and you want to remove one of those values, then instantiate one of the the following patterns:
```
ordered collection removeFirst 
ordered collection removeLast 
```
If you have a bag, set, or sorted collection, and you want to store an expression's value into the collection, then instantiate the following pattern:
```
ordered collection add: expression 
```
If you want to convert one kind of collection into another, then send asArray, asOrderedCollection, asBag, asSet, or asSortedCollection.