diff --git a/src/__internal/include.h b/src/__internal/include.h
index cd185c6..417c362 100644
--- a/src/__internal/include.h
+++ b/src/__internal/include.h
@@ -48,20 +48,21 @@ typedef vtype_float     fl_t;
 typedef vtype_double   dbl_t;
 typedef vtype_ldouble ldbl_t;
 
-typedef vtype_string  str_t;
-typedef vtype_array   arr_t;
-typedef vtype_list   list_t;
-typedef vtype_map     map_t;
-typedef vtype_set     set_t;
-typedef vtype_dict   dict_t;
+typedef vtype_string   str_t;
+typedef vtype_array    arr_t;
+typedef vtype_list    list_t;
+typedef vtype_map      map_t;
+typedef vtype_set      set_t;
+typedef vtype_dict    dict_t;
+typedef vtype_variable var_t;
 
 typedef vtype_hash   hash_t;
 
 
 extern const size_t LIBCDSB_BUILTIN_VTYPE_SIZES[19];
 
-extern int    libcdsb_builtin_variable_compare(vtype_variable s0, vtype_variable s1) pure__ wur__;
-extern hash_t libcdsb_builtin_variable_hash   (vtype_variable value)                 pure__ wur__;
+extern int    libcdsb_builtin_variable_compare(var_t s0, var_t s1) pure__ wur__;
+extern hash_t libcdsb_builtin_variable_hash   (var_t value)        pure__ wur__;
 
 ainline(stack_t* libcdsb_builtin_stack_insert(stack_t* x, void* v)) {
     stack_t* p = x->prev;
diff --git a/src/__internal/vnode.h b/src/__internal/vnode.h
index 8f8bb59..401711a 100644
--- a/src/__internal/vnode.h
+++ b/src/__internal/vnode.h
@@ -9,23 +9,15 @@
 
 #define is_permissible(T) (sizeof(void*) >= sizeof(T) && _Alignof(void*) >= _Alignof(T))
 
-typedef union {
-    void* ptr; bool    b;
-    str_t   s; arr_t   a; list_t  l;
-    map_t   m; set_t  vs; dict_t vd;
-    u8_t   u8; u16_t u16; u32_t u32; u64_t u64;
-    fl_t    f; dbl_t   d; ldbl_t ld;
-} var_t;
-
 typedef void* vnode_t;
 
-extern vnode_t libcdsb_builtin_vnode_create   (          vtype_variable) wur__;
-extern vnode_t libcdsb_builtin_vnode_create_ex(vtype xt, vtype_variable) wur__;
+extern vnode_t libcdsb_builtin_vnode_create   (          var_t) wur__;
+extern vnode_t libcdsb_builtin_vnode_create_ex(vtype xt, var_t) wur__;
 
-extern vtype_variable libcdsb_builtin_vnode_peek(const vnode_t* x, vtype type) pure__ wur__ Nonnull__(1);
-extern void           libcdsb_builtin_vnode_free(      vnode_t* x, vtype type)              Nonnull__(1);
+extern var_t libcdsb_builtin_vnode_peek(const vnode_t* x, vtype type) pure__ wur__ Nonnull__(1);
+extern void  libcdsb_builtin_vnode_free(      vnode_t* x, vtype type)              Nonnull__(1);
 
-ainline(void libcdsb_builtin_vnode_attach(vnode_t* node, vtype_variable value)) {
+ainline(void libcdsb_builtin_vnode_attach(vnode_t* node, var_t value)) {
     if (value.type < VTYPE_STRING) {
         *node = libcdsb_builtin_vnode_create(value);
     } else if (sizeof(str_t) == sizeof(void*) && value.type == VTYPE_STRING) {
@@ -36,7 +28,7 @@ ainline(void libcdsb_builtin_vnode_attach(vnode_t* node, vtype_variable value))
     }
 }
 
-ainline(void libcdsb_builtin_vnode_attach_ex(vnode_t* node, vtype target, vtype_variable value)) {
+ainline(void libcdsb_builtin_vnode_attach_ex(vnode_t* node, vtype target, var_t value)) {
     if (value.type < VTYPE_STRING) {
         *node = libcdsb_builtin_vnode_create_ex(target, value);
     } else {
diff --git a/src/array/access.c b/src/array/access.c
index 2f34201..3976b47 100644
--- a/src/array/access.c
+++ b/src/array/access.c
@@ -23,7 +23,7 @@ int libcdsb_array_get(vtype_array* x, ssize_t i, void* _, array_access_callback
     return r;
 }
 
-int libcdsb_array_find(arr_t* x, vtype_variable var, void* _, array_access_callback callback, bool r, bool cut) {
+int libcdsb_array_find(arr_t* x, var_t var, void* _, array_access_callback callback, bool r, bool cut) {
     void   *p;
     ssize_t i;
     int   cmp;
diff --git a/src/array/compute.c b/src/array/compute.c
index 2b2c215..a6daeb2 100644
--- a/src/array/compute.c
+++ b/src/array/compute.c
@@ -24,7 +24,7 @@ hash_t array_hash(const arr_t* s) {
 }
 
 
-size_t libcdsb_array_count(const arr_t* s, vtype_variable var) {
+size_t libcdsb_array_count(const arr_t* s, var_t var) {
     void   *p;
     void   *e;
     int   cmp;
diff --git a/src/array/modify.c b/src/array/modify.c
index 96eaba4..550a9bf 100644
--- a/src/array/modify.c
+++ b/src/array/modify.c
@@ -5,7 +5,7 @@
 #include "../__internal/assert.h"
 #include "../__internal/vnode.h"
 
-ssize_t libcdsb_array_insert(arr_t* x, vtype_variable var) {
+ssize_t libcdsb_array_insert(arr_t* x, var_t var) {
     ssize_t i;
     vnode_t n;
 
@@ -29,7 +29,7 @@ ssize_t libcdsb_array_insert(arr_t* x, vtype_variable var) {
 }
 
 
-ssize_t libcdsb_array_attach(arr_t* x, vtype_variable var) {
+ssize_t libcdsb_array_attach(arr_t* x, var_t var) {
     ssize_t i;
     vnode_t n;
 
diff --git a/src/dict/access.c b/src/dict/access.c
index 81d2187..31ab0ef 100644
--- a/src/dict/access.c
+++ b/src/dict/access.c
@@ -3,10 +3,10 @@
 
 #include "include.h"
 
-int libcdsb_dict_find(dict_t* x, vtype_variable kvar, void* dt, dict_access_callback callback, bool cut) {
-    dnode_t     *c, **p;
-    int               r;
-    vtype_variable k, v;
+int libcdsb_dict_find(dict_t* x, var_t kvar, void* dt, dict_access_callback callback, bool cut) {
+    dnode_t *c, **p;
+    int           r;
+    var_t      k, v;
 
     if (x->capacity) {
         c = *(p = x->nodes + (variable_hash(kvar) % x->capacity));
@@ -39,7 +39,7 @@ int libcdsb_dict_foreach(dict_t* x, void* dt, dict_access_callback callback, boo
     dnode_t *c;
     ssize_t  i;
     int      r;
-    vtype_variable k, v;
+    var_t k, v;
 
     r = 0;
     i = x->capacity;
diff --git a/src/dict/modify.c b/src/dict/modify.c
index 3febcf4..48be73f 100644
--- a/src/dict/modify.c
+++ b/src/dict/modify.c
@@ -50,9 +50,9 @@ bool libcdsb_dict_shrink_to_fit(dict_t* s) {
 }
 
 
-bool libcdsb_dict_update(dict_t* x, vtype_variable key, vtype_variable value, void* dt, dict_access_callback callback) {
-    dnode_t     *c, **p;
-    vtype_variable    k;
+bool libcdsb_dict_update(dict_t* x, var_t key, var_t value, void* dt, dict_access_callback callback) {
+    dnode_t *c, **p;
+    var_t         k;
 
     if (!x->capacity || (double)x->size / x->capacity > REBUILD_POINT_MAX)
         libcdsb_builtin_rehash(x, x->capacity + CAPACITY_BLOCK);
@@ -89,9 +89,9 @@ bool libcdsb_dict_update(dict_t* x, vtype_variable key, vtype_variable value, vo
 }
 
 
-bool libcdsb_dict_inject(dict_t* x, vtype_variable key, vtype_variable value, void* dt, dict_access_callback callback) {
-    dnode_t     *c, **p;
-    vtype_variable    k;
+bool libcdsb_dict_inject(dict_t* x, var_t key, var_t value, void* dt, dict_access_callback callback) {
+    dnode_t *c, **p;
+    var_t         k;
 
     if (!x->capacity || (double)x->size / x->capacity > REBUILD_POINT_MAX)
         libcdsb_builtin_rehash(x, x->capacity + CAPACITY_BLOCK);
diff --git a/src/list/access.c b/src/list/access.c
index dcca0a9..6337a53 100644
--- a/src/list/access.c
+++ b/src/list/access.c
@@ -50,12 +50,12 @@ int libcdsb_list_get(vtype_list* x, ssize_t i, void* _, list_access_callback cal
 }
 
 
-int libcdsb_list_find(vtype_list* x, vtype_variable value, void* _, list_access_callback callback, bool r, bool cut) {
+int libcdsb_list_find(vtype_list* x, var_t value, void* _, list_access_callback callback, bool r, bool cut) {
     ldir_t dir;
     lnode_t* c;
     ssize_t  i;
     int    cmp;
-    vtype_variable v;
+    var_t    v;
 
     dir = r ? LD_PREV : LD_NEXT;
     c   = ldir_dir((lnode_t*)x, dir);
diff --git a/src/list/compute.c b/src/list/compute.c
index f408798..0aae992 100644
--- a/src/list/compute.c
+++ b/src/list/compute.c
@@ -36,7 +36,7 @@ hash_t list_hash(const list_t* s) {
 }
 
 
-size_t libcdsb_list_count(const list_t* s, vtype_variable value) {
+size_t libcdsb_list_count(const list_t* s, var_t value) {
     lnode_t* c;
     size_t   n;
     int    cmp;
diff --git a/src/list/modify.c b/src/list/modify.c
index 12b81f3..16f7fbd 100644
--- a/src/list/modify.c
+++ b/src/list/modify.c
@@ -3,7 +3,7 @@
 
 #include "include.h"
 
-bool libcdsb_list_insert(list_t* x, ssize_t i, vtype_variable value, int ins, void* dt, list_access_callback callback) {
+bool libcdsb_list_insert(list_t* x, ssize_t i, var_t value, int ins, void* dt, list_access_callback callback) {
     ldir_t dir;
     lnode_t* c;
 
@@ -52,7 +52,7 @@ bool libcdsb_list_insert(list_t* x, ssize_t i, vtype_variable value, int ins, vo
 }
 
 
-bool libcdsb_list_attach(list_t* x, ssize_t i, vtype_variable value, int ins, void* dt, list_access_callback callback) {
+bool libcdsb_list_attach(list_t* x, ssize_t i, var_t value, int ins, void* dt, list_access_callback callback) {
     ldir_t dir;
     lnode_t* c;
 
diff --git a/src/map/access.c b/src/map/access.c
index 6c51ab5..8bd4f85 100644
--- a/src/map/access.c
+++ b/src/map/access.c
@@ -45,10 +45,10 @@ static int libcdsb_builtin_foreach(map_t* x, void* data, map_access_callback cal
 
 /*#####################################################################################################################*/
 
-int libcdsb_map_find(map_t* x, vtype_variable key, void* _, map_access_callback callback, bool cut) {
+int libcdsb_map_find(map_t* x, var_t key, void* _, map_access_callback callback, bool cut) {
     mnode_t*  c;
     int     cmp;
-    vtype_variable k;
+    var_t     k;
 
     c = x->root;
 
diff --git a/src/set/access.c b/src/set/access.c
index 16c9dd2..ed7b41b 100644
--- a/src/set/access.c
+++ b/src/set/access.c
@@ -46,10 +46,10 @@ static int libcdsb_builtin_foreach(set_t* x, void* data, vset_access_callback ca
 
 /*#####################################################################################################################*/
 
-int libcdsb_vset_find(vtype_set* x, vtype_variable value, void* _, vset_access_callback callback, bool cut) {
+int libcdsb_vset_find(vtype_set* x, var_t value, void* _, vset_access_callback callback, bool cut) {
     rbnode_t* c;
     int     cmp;
-    vtype_variable v;
+    var_t     v;
 
     c = x->root;
 
diff --git a/src/stringify.c b/src/stringify.c
index a1e3adb..0149113 100644
--- a/src/stringify.c
+++ b/src/stringify.c
@@ -62,7 +62,7 @@ const char* libcdsb_vtype_name(vtype t) {
 }
 
 
-const char* libcdsb_variable_stringify(vtype_variable value) {
+const char* libcdsb_variable_stringify(var_t value) {
     if (is_null(value.pointer) || (value.type == VTYPE_POINTER && is_null(*(void**)value.pointer))) return "null";
     if (value.type == VTYPE_BOOLEAN) return (*(vtype_bool*)value.pointer) ? "true" : "false";
     if (value.type == VTYPE_STRING)  return *(char**)value.pointer;
diff --git a/src/vnode.c b/src/vnode.c
index 2aca342..6cd2768 100644
--- a/src/vnode.c
+++ b/src/vnode.c
@@ -5,6 +5,14 @@
 #include "__internal/vnode.h"
 #include "../include/string.h"
 
+typedef union {
+    void* ptr; bool    b;
+    str_t   s; arr_t   a; list_t  l;
+    map_t   m; set_t  vs; dict_t vd;
+    u8_t   u8; u16_t u16; u32_t u32; u64_t u64;
+    fl_t    f; dbl_t   d; ldbl_t ld;
+} any_t;
+
 static vtype libcdsb_builtin_round(u64_t* x, ldbl_t v) {
     if (v > 0) {
         *x = (u64_t)(v + 0.5);
@@ -16,7 +24,7 @@ static vtype libcdsb_builtin_round(u64_t* x, ldbl_t v) {
 }
 
 static vnode_t libcdsb_builtin_create_value(vtype xt, const void* v, vtype t) {
-    var_t _;
+    any_t _;
 
     if (t == VTYPE_FLOAT)  {
         t = libcdsb_builtin_round(&_.u64, *(fl_t*)v);
@@ -82,7 +90,7 @@ static vnode_t libcdsb_builtin_create_value(vtype xt, const void* v, vtype t) {
 }
 
 static vnode_t libcdsb_builtin_create_float(vtype xt, const void* v, vtype t) {
-    var_t _;
+    any_t _;
 
     if        (t == VTYPE_UINT8 || t == VTYPE_BOOLEAN ) {
         _.ld = *(u8_t*)v;
@@ -129,8 +137,8 @@ static vnode_t libcdsb_builtin_create_float(vtype xt, const void* v, vtype t) {
 
 /*#####################################################################################################################*/
 
-vnode_t libcdsb_builtin_vnode_create(vtype_variable var) {
-    var_t _ = { .ptr = 0 };
+vnode_t libcdsb_builtin_vnode_create(var_t var) {
+    any_t _ = { .ptr = 0 };
 
     switch (var.type) { default: abort();
 
@@ -191,8 +199,8 @@ vnode_t libcdsb_builtin_vnode_create(vtype_variable var) {
     return _.ptr;
 }
 
-vnode_t libcdsb_builtin_vnode_create_ex(vtype xt, vtype_variable var) {
-    var_t _ = { .ptr = 0 };
+vnode_t libcdsb_builtin_vnode_create_ex(vtype xt, var_t var) {
+    any_t _ = { .ptr = 0 };
 
     if (xt <= VTYPE_LDOUBLE) {
         if (var.type >= VTYPE_STRING) var.type = VTYPE_POINTER;
@@ -231,8 +239,8 @@ vnode_t libcdsb_builtin_vnode_create_ex(vtype xt, vtype_variable var) {
     return _.ptr;
 }
 
-vtype_variable libcdsb_builtin_vnode_peek(const vnode_t* x, vtype t) {
-    vtype_variable var = { .type = t };
+var_t libcdsb_builtin_vnode_peek(const vnode_t* x, vtype t) {
+    var_t var = { .type = t };
 
     switch (var.type) { default: abort();
 
diff --git a/src/vtype.c b/src/vtype.c
index aff7252..bac6aae 100644
--- a/src/vtype.c
+++ b/src/vtype.c
@@ -99,7 +99,7 @@ static int libcdsb_builtin_vtype_compare_values_eq(const void* s0, const void* s
 
 /*#####################################################################################################################*/
 
-int libcdsb_builtin_variable_compare(vtype_variable s0, vtype_variable s1) {
+int libcdsb_builtin_variable_compare(var_t s0, var_t s1) {
     if (s0.type == s1.type) return libcdsb_builtin_vtype_compare_values_eq(s0.pointer, s1.pointer, s0.type);
 
     if (s0.type <= VTYPE_LDOUBLE && s0.type <= VTYPE_LDOUBLE) {
@@ -116,7 +116,7 @@ int libcdsb_builtin_variable_compare(vtype_variable s0, vtype_variable s1) {
 
 /*#####################################################################################################################*/
 
-hash_t libcdsb_builtin_variable_hash(vtype_variable value) {
+hash_t libcdsb_builtin_variable_hash(var_t value) {
     switch (value.type) { default: abort();
 
         case VTYPE_BOOLEAN: