Lots more code written, and I think most of it's OK; but it doesn't compile yet.

src/c/memory/node.h

@@ -0,0 +1,31 @@
+/**
+ *  memory/node.h
+ *
+ *  Top level data about the actual node on which this memory system sits.
+ *  May not belong in `memory`. 
+ *
+ *  (c) 2026 Simon Brooke <simon@journeyman.cc>
+ *  Licensed under GPL version 2.0, or, at your option, any later version.
+ */
+
+#ifndef __psse_memory_node_h
+#define __psse_memory_node_h
+
+
+/**
+ * @brief The index of this node in the hypercube.
+ * 
+ */
+extern int node_index;
+
+/**
+ * @brief The canonical `nil` pointer
+ * 
+ */
+extern struct pso_pointer nil;
+
+/**
+ * @brief the canonical `t` (true) pointer.
+ * 
+ */
+extern struct pso_pointer t;