diff --git a/src/eval/eval.mdesk b/src/eval/eval.mdesk
index e943b21d..b70e3fbb 100644
--- a/src/eval/eval.mdesk
+++ b/src/eval/eval.mdesk
@@ -74,6 +74,7 @@ E_TypeKindTable:
   {Set                       "set"                 0    }
   {Lens                      "lens"                0    }
   {LensSpec                  "lens_spec"           0    }
+  {MetaExpr                  "meta_expr"           0    }
 }
 
 @table(name  op_kind  precedence  op_pre  op_sep  op_pos  op_chain)
diff --git a/src/eval/eval_types.c b/src/eval/eval_types.c
index b6194826..a84bf0ef 100644
--- a/src/eval/eval_types.c
+++ b/src/eval/eval_types.c
@@ -1338,7 +1338,8 @@ e_type_unwrap(E_TypeKey key)
     if((E_TypeKind_FirstIncomplete <= kind && kind <= E_TypeKind_LastIncomplete) ||
        kind == E_TypeKind_Modifier ||
        kind == E_TypeKind_Alias ||
-       kind == E_TypeKind_Lens)
+       kind == E_TypeKind_Lens ||
+       kind == E_TypeKind_MetaExpr)
     {
       result = e_type_direct_from_key(result);
     }
@@ -1800,6 +1801,12 @@ e_type_lhs_string_from_key(Arena *arena, E_TypeKey key, String8List *out, U32 pr
       }
       str8_list_push(arena, out, str8_lit("::*"));
     }break;
+    
+    case E_TypeKind_MetaExpr:
+    {
+      E_TypeKey direct = e_type_direct_from_key(key);
+      e_type_lhs_string_from_key(arena, direct, out, prec, skip_return);
+    }break;
   }
 }
 
@@ -1874,6 +1881,12 @@ e_type_rhs_string_from_key(Arena *arena, E_TypeKey key, String8List *out, U32 pr
       E_TypeKey direct = e_type_direct_from_key(key);
       e_type_rhs_string_from_key(arena, direct, out, 2);
     }break;
+    
+    case E_TypeKind_MetaExpr:
+    {
+      E_TypeKey direct = e_type_direct_from_key(key);
+      e_type_rhs_string_from_key(arena, direct, out, prec);
+    }break;
   }
 }
 
@@ -1947,6 +1960,13 @@ e_default_expansion_type_from_key(E_TypeKey root_key)
       done = 0;
     }
     
+    //- rjf: if we have meta-expression tags in the type chain, defer
+    // to the next type in the chain.
+    else if(kind == E_TypeKind_MetaExpr)
+    {
+      done = 0;
+    }
+    
     //- rjf: if we've reached a struct-like, then we can use that for
     // struct-like expansion.
     else if(kind == E_TypeKind_Struct ||
diff --git a/src/eval/generated/eval.meta.c b/src/eval/generated/eval.meta.c
index 6febd96e..cf45b3a3 100644
--- a/src/eval/generated/eval.meta.c
+++ b/src/eval/generated/eval.meta.c
@@ -14,7 +14,7 @@ str8_lit_comp("CharLiteral"),
 str8_lit_comp("Symbol"),
 };
 
-String8 e_type_kind_basic_string_table[58] =
+String8 e_type_kind_basic_string_table[59] =
 {
 str8_lit_comp(""),
 str8_lit_comp("void"),
@@ -74,9 +74,10 @@ str8_lit_comp("variadic"),
 str8_lit_comp("set"),
 str8_lit_comp("lens"),
 str8_lit_comp("lens_spec"),
+str8_lit_comp("meta_expr"),
 };
 
-U8 e_type_kind_basic_byte_size_table[58] =
+U8 e_type_kind_basic_byte_size_table[59] =
 {
 0,
 0,
@@ -136,6 +137,7 @@ U8 e_type_kind_basic_byte_size_table[58] =
 0,
 0,
 0,
+0,
 };
 
 String8 e_expr_kind_strings[48] =
diff --git a/src/eval/generated/eval.meta.h b/src/eval/generated/eval.meta.h
index d9212232..6ba7a85e 100644
--- a/src/eval/generated/eval.meta.h
+++ b/src/eval/generated/eval.meta.h
@@ -77,6 +77,7 @@ E_TypeKind_Variadic,
 E_TypeKind_Set,
 E_TypeKind_Lens,
 E_TypeKind_LensSpec,
+E_TypeKind_MetaExpr,
 E_TypeKind_COUNT,
 E_TypeKind_FirstBasic      = E_TypeKind_Void,
 E_TypeKind_LastBasic       = E_TypeKind_ComplexF128,
@@ -162,8 +163,8 @@ E_InterpretationCode_COUNT,
 
 C_LINKAGE_BEGIN
 extern String8 e_token_kind_strings[6];
-extern String8 e_type_kind_basic_string_table[58];
-extern U8 e_type_kind_basic_byte_size_table[58];
+extern String8 e_type_kind_basic_string_table[59];
+extern U8 e_type_kind_basic_byte_size_table[59];
 extern String8 e_expr_kind_strings[48];
 extern E_OpInfo e_expr_kind_op_info_table[48];
 extern String8 e_interpretation_code_display_strings[11];
diff --git a/src/eval_visualization/eval_visualization_core.c b/src/eval_visualization/eval_visualization_core.c
index 8f06f230..d22ca1a3 100644
--- a/src/eval_visualization/eval_visualization_core.c
+++ b/src/eval_visualization/eval_visualization_core.c
@@ -1657,6 +1657,38 @@ ev_string_iter_next(Arena *arena, EV_StringIter *it, String8 *out_string)
         }
       }break;
       
+      //////////////////////////
+      //- rjf: meta-expression tags
+      //
+      case E_TypeKind_MetaExpr:
+      {
+        if(params->flags & EV_StringFlag_ReadOnlyDisplayRules)
+        {
+          switch(task_idx)
+          {
+            default:{}break;
+            case 0:
+            {
+              need_pop = 0;
+              need_new_task = 1;
+              new_task.params = *params;
+              new_task.eval = eval;
+              new_task.eval.irtree.type_key = e_type_direct_from_key(eval.irtree.type_key);
+            }break;
+            case 1:
+            {
+              E_Type *type = e_type_from_key__cached(type_key);
+              *out_string = push_str8f(arena, " (%S)", type->name);
+            }break;
+          }
+        }
+        else
+        {
+          E_Type *type = e_type_from_key__cached(type_key);
+          *out_string = type->name;
+        }
+      }break;
+      
       //////////////////////////
       //- rjf: modifiers
       //
diff --git a/src/raddbg/generated/raddbg.meta.c b/src/raddbg/generated/raddbg.meta.c
index 1c8e1e17..c8476d82 100644
--- a/src/raddbg/generated/raddbg.meta.c
+++ b/src/raddbg/generated/raddbg.meta.c
@@ -328,7 +328,7 @@ RD_NameSchemaInfo rd_name_schema_info_table[17] =
 {str8_lit_comp("settings"), str8_lit_comp("x:\n{\n  @default(1) 'hover_animations':     bool,\n  @default(1) 'press_animations':     bool,\n  @default(0) 'focus_animations':     bool,\n  @default(1) 'tooltip_animations':   bool,\n  @default(1) 'menu_animations':      bool,\n  @default(1) 'scrolling_animations': bool,\n  @default(1) 'background_blur':      bool,\n  @default(1) 'thread_lines':         bool,\n  @default(1) 'breakpoint_lines':     bool,\n  @default(1) 'thread_glow':          bool,\n  @default(1) 'breakpoint_glow':      bool,\n  @default(0) 'opaque_backgrounds':   bool,\n  @default(1) 'smooth_main_text':     bool,\n  @default(0) 'smooth_code_text':     bool,\n  @default(1) 'hint_main_text':       bool,\n  @default(1) 'hint_code_text':       bool,\n  @default(2) 'tab_width':      @range[1, 32] u64,\n  @can_be_per_window 'main_font_size': @range[6, 72] u64,\n  @can_be_per_window 'code_font_size': @range[1, 32] u64,\n}\n")},
 {str8_lit_comp("text"), str8_lit_comp("x:\n{\n  'lang':lang,\n  'size':code_string,\n  @default(1) 'show_line_numbers':bool,\n}\n")},
 {str8_lit_comp("disasm"), str8_lit_comp("x:\n{\n  'arch':              arch,\n  'syntax':            dasm_syntax,\n  'size':              code_string,\n  @default(1) 'show_addresses':    bool,\n  @default(0) 'show_code_bytes':   bool,\n  @default(1) 'show_source_lines': bool,\n  @default(1) 'show_symbol_names': bool,\n  @default(1) 'show_line_numbers': bool,\n}\n")},
-{str8_lit_comp("memory"), str8_lit_comp("x:\n{\n  'size': code_string,\n  @default(16) 'num_columns': @range[1, 256] u64,\n  @default(1)  'bytes_per_cell': @range[1, 16] u64,\n}\n")},
+{str8_lit_comp("memory"), str8_lit_comp("x:\n{\n  'size': code_string,\n  @default(16) 'num_columns': @range[1, 64] u64,\n  @default(1)  'bytes_per_cell': @range[1, 8] u64,\n}\n")},
 {str8_lit_comp("bitmap"), str8_lit_comp("x:\n{\n  @order(0) 'w': u64,\n  @order(1) 'h': u64,\n  'fmt': tex2dformat,\n}\n")},
 {str8_lit_comp("geo3d"), str8_lit_comp("x:\n{\n  'count': code_string,\n  'vtx': code_string,\n  'vtx_size': code_string,\n  'yaw': @range[0, 1] f32,\n  'pitch': @range[-0.5, 0] f32,\n  'zoom': @range[0, 100] f32,\n}\n")},
 {str8_lit_comp("target"), str8_lit_comp("@commands(enable_cfg, launch_and_run, launch_and_step_into, remove_cfg)\n@collection_commands(add_target)\nx:\n{\n  'label':              code_string,\n  'executable':         path,\n  'arguments':          string,\n  'working_directory':  path,\n  'entry_point':        code_string,\n  'stdout_path':        path,\n  'stderr_path':        path,\n  'stdin_path':         path,\n  'environment':        query,\n  'debug_subprocesses': bool,\n  @no_expand @default(0) 'enabled': bool,\n}\n")},
diff --git a/src/raddbg/raddbg.mdesk b/src/raddbg/raddbg.mdesk
index 3820156f..966e7bb7 100644
--- a/src/raddbg/raddbg.mdesk
+++ b/src/raddbg/raddbg.mdesk
@@ -205,8 +205,8 @@ RD_VocabTable:
       x:
     {
       'size': code_string,
-      @default(16) 'num_columns': @range[1, 256] u64,
-      @default(1)  'bytes_per_cell': @range[1, 16] u64,
+      @default(16) 'num_columns': @range[1, 64] u64,
+      @default(1)  'bytes_per_cell': @range[1, 8] u64,
     }
     ```
   }
diff --git a/src/raddbg/raddbg_eval.c b/src/raddbg/raddbg_eval.c
index 521f35fc..bc90f40d 100644
--- a/src/raddbg/raddbg_eval.c
+++ b/src/raddbg/raddbg_eval.c
@@ -367,15 +367,36 @@ E_TYPE_ACCESS_FUNCTION_DEF(schema)
       //- rjf: catchall cases
       else if(str8_match(child_schema->first->string, str8_lit("u64"), 0))
       {
+        Temp scratch = scratch_begin(&arena, 1);
         child_type_key = e_type_key_basic(E_TypeKind_U64);
+        E_Expr *expr = e_parse_expr_from_text(scratch.arena, child->first->string).exprs.first;
+        if(expr->kind != E_ExprKind_LeafU64)
+        {
+          child_type_key = e_type_key_cons(.kind = E_TypeKind_MetaExpr, .name = child->first->string, .direct_key = child_type_key);
+        }
+        scratch_end(scratch);
       }
       else if(str8_match(child_schema->first->string, str8_lit("f32"), 0))
       {
+        Temp scratch = scratch_begin(&arena, 1);
         child_type_key = e_type_key_basic(E_TypeKind_F32);
+        E_Expr *expr = e_parse_expr_from_text(scratch.arena, child->first->string).exprs.first;
+        if(expr->kind != E_ExprKind_LeafF32 && expr->kind != E_ExprKind_LeafF64)
+        {
+          child_type_key = e_type_key_cons(.kind = E_TypeKind_MetaExpr, .name = child->first->string, .direct_key = child_type_key);
+        }
+        scratch_end(scratch);
       }
       else if(str8_match(child_schema->first->string, str8_lit("bool"), 0))
       {
+        Temp scratch = scratch_begin(&arena, 1);
         child_type_key = e_type_key_basic(E_TypeKind_Bool);
+        E_Expr *expr = e_parse_expr_from_text(scratch.arena, child->first->string).exprs.first;
+        if(expr->kind != E_ExprKind_LeafU64)
+        {
+          child_type_key = e_type_key_cons(.kind = E_TypeKind_MetaExpr, .name = child->first->string, .direct_key = child_type_key);
+        }
+        scratch_end(scratch);
       }
       else if(str8_match(child_schema->first->string, str8_lit("vaddr_range"), 0))
       {