• Modifying the Collection View Item

• Working with the Responder Chain

• Setting the Content

• Setting the Selection Mode

• Laying out the Collection View

• Modifying the Visual Properties

• allowsMultipleSelection

• backgroundColors

• content

• isFirstResponder

• isSelectable

• itemPrototype

• maxItemSize

• maxNumberOfColumns

• maxNumberOfRows

• minItemSize

• newItemForRepresentedObject:

• selectionIndexes

• setAllowsMultipleSelection:

• setBackgroundColors:

• setContent:

• setItemPrototype:

• setMaxItemSize:

• setMaxNumberOfColumns:

• setMaxNumberOfRows:

• setMinItemSize:

• setSelectable:

• setSelectionIndexes: