"Before an Objective C class can be used, it must be imported; by default, a small set of common classes are imported automatically, but additional classes can be imported as needed."
{ $subsection import-objc-class }
"Every imported Objective C class has as corresponding class word in the " { $vocab-link "objc-classes" } " vocabulary. Class words push the class object in the stack, allowing class methods to be invoked."
$nl
"Messages can be sent to classes and instances using a pair of parsing words:"
{ $subsection POSTPONE:-> }
{ $subsection POSTPONE:SUPER-> }
"These parsing words are actually syntax sugar for a pair of ordinary words; they can be used instead of the parsing words if the selector name is dynamically computed:"