diff --git a/extra/cli/git/authors.txt b/basis/cli/git/authors.txt similarity index 100% rename from extra/cli/git/authors.txt rename to basis/cli/git/authors.txt diff --git a/extra/cli/git/git.factor b/basis/cli/git/git.factor similarity index 100% rename from extra/cli/git/git.factor rename to basis/cli/git/git.factor diff --git a/extra/combinators/extras/authors.txt b/basis/combinators/extras/authors.txt similarity index 100% rename from extra/combinators/extras/authors.txt rename to basis/combinators/extras/authors.txt diff --git a/extra/combinators/extras/extras-docs.factor b/basis/combinators/extras/extras-docs.factor similarity index 100% rename from extra/combinators/extras/extras-docs.factor rename to basis/combinators/extras/extras-docs.factor diff --git a/extra/combinators/extras/extras-tests.factor b/basis/combinators/extras/extras-tests.factor similarity index 100% rename from extra/combinators/extras/extras-tests.factor rename to basis/combinators/extras/extras-tests.factor diff --git a/extra/combinators/extras/extras.factor b/basis/combinators/extras/extras.factor similarity index 100% rename from extra/combinators/extras/extras.factor rename to basis/combinators/extras/extras.factor diff --git a/extra/grouping/extras/extras-docs.factor b/basis/grouping/extras/extras-docs.factor similarity index 100% rename from extra/grouping/extras/extras-docs.factor rename to basis/grouping/extras/extras-docs.factor diff --git a/extra/grouping/extras/extras-tests.factor b/basis/grouping/extras/extras-tests.factor similarity index 100% rename from extra/grouping/extras/extras-tests.factor rename to basis/grouping/extras/extras-tests.factor diff --git a/extra/grouping/extras/extras.factor b/basis/grouping/extras/extras.factor similarity index 100% rename from extra/grouping/extras/extras.factor rename to basis/grouping/extras/extras.factor diff --git a/extra/grouping/extras/tags.txt b/basis/grouping/extras/tags.txt similarity index 100% rename from extra/grouping/extras/tags.txt rename to basis/grouping/extras/tags.txt diff --git a/extra/sequences/extras/extras-docs.factor b/basis/sequences/extras/extras-docs.factor similarity index 100% rename from extra/sequences/extras/extras-docs.factor rename to basis/sequences/extras/extras-docs.factor diff --git a/extra/sequences/extras/extras-tests.factor b/basis/sequences/extras/extras-tests.factor similarity index 100% rename from extra/sequences/extras/extras-tests.factor rename to basis/sequences/extras/extras-tests.factor diff --git a/extra/sequences/extras/extras.factor b/basis/sequences/extras/extras.factor similarity index 100% rename from extra/sequences/extras/extras.factor rename to basis/sequences/extras/extras.factor diff --git a/extra/sequences/extras/summary.txt b/basis/sequences/extras/summary.txt similarity index 100% rename from extra/sequences/extras/summary.txt rename to basis/sequences/extras/summary.txt diff --git a/extra/sequences/extras/tags.txt b/basis/sequences/extras/tags.txt similarity index 100% rename from extra/sequences/extras/tags.txt rename to basis/sequences/extras/tags.txt diff --git a/extra/sets/extras/authors.txt b/basis/sets/extras/authors.txt similarity index 100% rename from extra/sets/extras/authors.txt rename to basis/sets/extras/authors.txt diff --git a/extra/sets/extras/extras-docs.factor b/basis/sets/extras/extras-docs.factor similarity index 100% rename from extra/sets/extras/extras-docs.factor rename to basis/sets/extras/extras-docs.factor diff --git a/extra/sets/extras/extras-tests.factor b/basis/sets/extras/extras-tests.factor similarity index 100% rename from extra/sets/extras/extras-tests.factor rename to basis/sets/extras/extras-tests.factor diff --git a/extra/sets/extras/extras.factor b/basis/sets/extras/extras.factor similarity index 100% rename from extra/sets/extras/extras.factor rename to basis/sets/extras/extras.factor diff --git a/extra/sets/extras/tags.txt b/basis/sets/extras/tags.txt similarity index 100% rename from extra/sets/extras/tags.txt rename to basis/sets/extras/tags.txt diff --git a/extra/tools/which/authors.txt b/basis/tools/which/authors.txt similarity index 100% rename from extra/tools/which/authors.txt rename to basis/tools/which/authors.txt diff --git a/extra/tools/which/which-docs.factor b/basis/tools/which/which-docs.factor similarity index 100% rename from extra/tools/which/which-docs.factor rename to basis/tools/which/which-docs.factor diff --git a/extra/tools/which/which.factor b/basis/tools/which/which.factor similarity index 100% rename from extra/tools/which/which.factor rename to basis/tools/which/which.factor