How do I list enabled language extensions from within GHCI?

Question

I know that I am able to set language extensions with

:set  -XWhateverExtension

but how do I list the extensions that are currently enabled?

Answer 1

> :show language
base language is: Haskell2010
with the following modifiers:
  -XNoDatatypeContexts
  -XExplicitForAll
  -XNondecreasingIndentation
  -XPatternSignatures
  -XScopedTypeVariables