diff --git a/include/fractal.hpp b/include/fractal.hpp
index db5c5bc..218b536 100644
--- a/include/fractal.hpp
+++ b/include/fractal.hpp
@@ -231,6 +231,16 @@ public:
 	}
 	group_id_t get_axiom() const { return m_axiom; }
 
+	const token_t& get_token(token_id_t id) const { return m_tokens[id]; }
+	const group_characteristic_t& get_group_characteristic(group_id_t id) const { return m_group_characteristics[id]; }
+	const weighted_group_t& get_weighted_group(weighted_group_id_t wgid) const { return m_weighted_groups[wgid]; }
+	const branch_rule_t& get_branch_rule(branch_rule_id_t id) const { return m_branch_rules[id]; }
+
+	size_t num_tokens() const { return m_tokens.size(); }
+	size_t num_groups() const { return m_group_characteristics.size(); }
+	size_t num_weighted_groups() const { return m_weighted_groups.size(); }
+	size_t num_branch_rules() const { return m_branch_rules.size(); }
+
 };
 
 class generator_t {