Implementation-Defined Packages

“CLOS”

EXPORTs all CLOS-specific symbols, including some additional symbols.

“SYSTEM”

has the nicknames “SYS” and “COMPILER”, and has no EXPORTed symbols. It defines many system internals.

“EXT”

is the umbrella package for all extensions: it imports and EXT:RE-EXPORTs all the external symbols in all CLISP extensions, so a simple (USE-PACKAGE "EXT") is enough to make all the extensions available in the current package. This package uses packages (in addition to “COMMON-LISP”): “LDAP”, “POSIX”, “SOCKET”, “GSTREAM”, “GRAY”, “I18N”, “CUSTOM”.

“CHARSET”

defines and EXPORTs some character sets, for use with EXT:MAKE-ENCODING and as :EXTERNAL-FORMAT argument.

“FFI”

implements the foreign function interface. Some platforms only.

“SCREEN”

defines an API for random screen access. Some platforms only.

“CS-COMMON-LISP”
“CS-COMMON-LISP-USER”

case-sensitive versions of “COMMON-LISP” and “COMMON-LISP-USER”. See Section 11.4, “Package Case-Sensitivity”.