libBLOC

diff --git a/include/BLOC/tree.h b/include/BLOC/tree.h
new file mode 100644
index 0000000..785751f
--- /dev/null
+++ b/include/BLOC/tree.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2023 Barry
+ *
+ * This file is part of Barry's Little Objects in C Library (libBLOC).
+ *
+ * libBLOC is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * libBLOC is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTIBILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * libBLOC.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef _BLOC_TREE_H
+#define _BLOC_TREE_H
+
+typedef struct Tree Tree;
+
+Tree *tree_create(struct ObjectType *type, int (*compare)(void *, void *));
+void tree_add(Tree *tree, void *obj);
+void tree_remove(Tree *tree, void *obj);
+unsigned int tree_count(Tree *tree);
+
+#endif