diff --git a/build_file.c b/build_file.c
index 5b091ac..bb5f65d 100644
--- a/build_file.c
+++ b/build_file.c
@@ -28,8 +28,8 @@ int main(int argc, char **argv) {
     bool run_server = false;
 
     bool core_test_target = false;
+    bool win32_target = false;
     bool wasm_target = true;
-    bool win32_target = true;
 
     if (execute_python_snippets) {
         sb8_t *sb = sb8_serial_begin(arena);
@@ -73,7 +73,7 @@ int main(int argc, char **argv) {
     if (core_test_target) {
         os_delete_file(s8_lit("core_test.pdb"));
         ok = os_systemf(
-            "cl ../src/core_test/core_test_entry.c -Fe:core_test.exe -Fd:core_test.pdb"
+            "cl ../src/core/core_test_entry.c -Fe:core_test.exe -Fd:core_test.pdb"
             " -I ../src"
             " /Zi /FC /nologo /Oi /O2"
             " /WX /W3 /wd4200 /diagnostics:column"
diff --git a/package/index.html b/package/index.html
index 5bc2f8c..fd36878 100644
--- a/package/index.html
+++ b/package/index.html
@@ -212,6 +212,7 @@ const mem = new memory_t(new WebAssembly['Memory']({ initial: 2000, maximum: 655
         window.requestAnimationFrame(wasm_update);
     }
 
+    addEventListener("resize", (event) => { wake_up(); });
     addEventListener("keydown", (event) => {
         wasm_exports["wasm_key_down"](mem.write_string_to_cglobal("wasm_temp_buff1", event.key), event.ctrlKey, event.shiftKey, event.altKey, event.metaKey);
         wake_up();
diff --git a/src/app/app.gen.c b/src/app/app.gen.c
index 9ef6f61..c20c63b 100644
--- a/src/app/app.gen.c
+++ b/src/app/app.gen.c
@@ -255,27 +255,27 @@ type_t type__app_event_kind_t = { type_kind_enum, s8_const_lit("app_event_kind_t
 };
 type_t type__app_event_t = { type_kind_struct, s8_const_lit("app_event_t"), sizeof(app_event_t),
     .members = (type_member_t[]){
-        {.name = s8_const_lit("next"), .type = &(type_t){type_kind_pointer, s8_const_lit("app_event_t*"), sizeof(void *), .base = &type__app_event_t}, .offset = offsetof(app_event_t, next)},
-        {.name = s8_const_lit("kind"), .type = &type__app_event_kind_t, .offset = offsetof(app_event_t, kind)},
-        {.name = s8_const_lit("mouse_button"), .type = &type__app_mouse_button_t, .offset = offsetof(app_event_t, mouse_button)},
-        {.name = s8_const_lit("key"), .type = &type__app_key_t, .offset = offsetof(app_event_t, key)},
-        {.name = s8_const_lit("text"), .type = &type__s8_t, .offset = offsetof(app_event_t, text)},
-        {.name = s8_const_lit("mouse_wheel_delta"), .type = &type__v3f64_t, .offset = offsetof(app_event_t, mouse_wheel_delta)},
-        {.name = s8_const_lit("ctrl"), .type = &type__b8, .offset = offsetof(app_event_t, ctrl)},
-        {.name = s8_const_lit("shift"), .type = &type__b8, .offset = offsetof(app_event_t, shift)},
-        {.name = s8_const_lit("alt"), .type = &type__b8, .offset = offsetof(app_event_t, alt)},
-        {.name = s8_const_lit("meta"), .type = &type__b8, .offset = offsetof(app_event_t, meta)},
-        {.name = s8_const_lit("dpr"), .type = &type__f64, .offset = offsetof(app_event_t, dpr)},
-        {.name = s8_const_lit("window_size"), .type = &type__v2f64_t, .offset = offsetof(app_event_t, window_size)},
-        {.name = s8_const_lit("mouse_pos"), .type = &type__v2f64_t, .offset = offsetof(app_event_t, mouse_pos)},
+        {.name = s8_const_lit("next"), .type = &(type_t){type_kind_pointer, s8_const_lit("app_event_t*"), sizeof(void *), .base = &type__app_event_t}, .offset = offsetof(app_event_t, next), .dont_serialize = 0},
+        {.name = s8_const_lit("kind"), .type = &type__app_event_kind_t, .offset = offsetof(app_event_t, kind), .dont_serialize = 0},
+        {.name = s8_const_lit("mouse_button"), .type = &type__app_mouse_button_t, .offset = offsetof(app_event_t, mouse_button), .dont_serialize = 0},
+        {.name = s8_const_lit("key"), .type = &type__app_key_t, .offset = offsetof(app_event_t, key), .dont_serialize = 0},
+        {.name = s8_const_lit("text"), .type = &type__s8_t, .offset = offsetof(app_event_t, text), .dont_serialize = 0},
+        {.name = s8_const_lit("mouse_wheel_delta"), .type = &type__v3f64_t, .offset = offsetof(app_event_t, mouse_wheel_delta), .dont_serialize = 0},
+        {.name = s8_const_lit("ctrl"), .type = &type__b8, .offset = offsetof(app_event_t, ctrl), .dont_serialize = 0},
+        {.name = s8_const_lit("shift"), .type = &type__b8, .offset = offsetof(app_event_t, shift), .dont_serialize = 0},
+        {.name = s8_const_lit("alt"), .type = &type__b8, .offset = offsetof(app_event_t, alt), .dont_serialize = 0},
+        {.name = s8_const_lit("meta"), .type = &type__b8, .offset = offsetof(app_event_t, meta), .dont_serialize = 0},
+        {.name = s8_const_lit("dpr"), .type = &type__f64, .offset = offsetof(app_event_t, dpr), .dont_serialize = 0},
+        {.name = s8_const_lit("window_size"), .type = &type__v2f64_t, .offset = offsetof(app_event_t, window_size), .dont_serialize = 0},
+        {.name = s8_const_lit("mouse_pos"), .type = &type__v2f64_t, .offset = offsetof(app_event_t, mouse_pos), .dont_serialize = 0},
     },
     .count = 13,
 };
 type_t type__app_event_list_t = { type_kind_struct, s8_const_lit("app_event_list_t"), sizeof(app_event_list_t),
     .members = (type_member_t[]){
-        {.name = s8_const_lit("first"), .type = &(type_t){type_kind_pointer, s8_const_lit("app_event_t*"), sizeof(void *), .base = &type__app_event_t}, .offset = offsetof(app_event_list_t, first)},
-        {.name = s8_const_lit("last"), .type = &(type_t){type_kind_pointer, s8_const_lit("app_event_t*"), sizeof(void *), .base = &type__app_event_t}, .offset = offsetof(app_event_list_t, last)},
-        {.name = s8_const_lit("len"), .type = &type__i32, .offset = offsetof(app_event_list_t, len)},
+        {.name = s8_const_lit("first"), .type = &(type_t){type_kind_pointer, s8_const_lit("app_event_t*"), sizeof(void *), .base = &type__app_event_t}, .offset = offsetof(app_event_list_t, first), .dont_serialize = 1},
+        {.name = s8_const_lit("last"), .type = &(type_t){type_kind_pointer, s8_const_lit("app_event_t*"), sizeof(void *), .base = &type__app_event_t}, .offset = offsetof(app_event_list_t, last), .dont_serialize = 0},
+        {.name = s8_const_lit("len"), .type = &type__i32, .offset = offsetof(app_event_list_t, len), .dont_serialize = 0},
     },
     .count = 3,
 };
\ No newline at end of file
diff --git a/src/app/app.meta.c b/src/app/app.meta.c
index 0c122c4..74aaaf8 100644
--- a/src/app/app.meta.c
+++ b/src/app/app.meta.c
@@ -182,7 +182,7 @@ void meta_app(ma_arena_t *arena) {
             };
 
             struct app_event_list_t {
-                app_event_t *first;
+                app_event_t *first; @dont_serialize
                 app_event_t *last;
                 i32 len;
             };
diff --git a/src/app/app_wasm.c b/src/app/app_wasm.c
index 6bf21fb..a436763 100644
--- a/src/app/app_wasm.c
+++ b/src/app/app_wasm.c
@@ -47,6 +47,11 @@ fn void app_init(void);
 
 fn void wasm_add_event(app_event_t event) {
     app_event_t *ev = ma_push_type(tcx.temp, app_event_t);
+    ev->alt = wasm_cached.alt;
+    ev->ctrl = wasm_cached.ctrl;
+    ev->meta = wasm_cached.meta;
+    ev->shift = wasm_cached.shift;
+    ev->mouse_pos = wasm_cached.mouse_pos;
     SLLQ_APPEND(wasm_event_list.first, wasm_event_list.last, ev);
     wasm_event_list.len += 1;
 }
@@ -56,11 +61,6 @@ fn_wasm_export void wasm_mouse_move(f64 x, f64 y, b32 ctrl, b32 shift, b32 alt,
     wasm_cached.ctrl = ctrl; wasm_cached.alt = alt; wasm_cached.meta = meta; wasm_cached.shift = shift;
     wasm_add_event((app_event_t){
         .kind = app_event_kind_mouse_move,
-        .mouse_pos = {x, y},
-        .ctrl = ctrl,
-        .shift = shift,
-        .alt = alt,
-        .meta = meta,
     });
 }
 
@@ -71,12 +71,7 @@ fn_wasm_export void wasm_mouse_down(f64 x, f64 y, i32 button, b32 ctrl, b32 shif
     wasm_cached.mouse_pos = (v2f64_t){x, y};
     wasm_add_event((app_event_t){
         .kind = app_event_kind_mouse_down,
-        .mouse_pos = {x, y},
         .mouse_button = button,
-        .ctrl = ctrl,
-        .shift = shift,
-        .alt = alt,
-        .meta = meta,
     });
 }
 
@@ -87,12 +82,7 @@ fn_wasm_export void wasm_mouse_up(f64 x, f64 y, i32 button, b32 ctrl, b32 shift,
     wasm_cached.mouse_pos = (v2f64_t){x, y};
     wasm_add_event((app_event_t){
         .kind = app_event_kind_mouse_up,
-        .mouse_pos = {x, y},
         .mouse_button = button,
-        .ctrl = ctrl,
-        .shift = shift,
-        .alt = alt,
-        .meta = meta,
     });
 }
 
@@ -102,11 +92,6 @@ fn_wasm_export void wasm_mouse_wheel(f64 x, f64 y, f64 delta_x, f64 delta_y, f64
     wasm_add_event((app_event_t){
         .kind = app_event_kind_mouse_wheel,
         .mouse_wheel_delta = {delta_x, delta_y, delta_z},
-        .mouse_pos = {x, y},
-        .ctrl = ctrl,
-        .shift = shift,
-        .alt = alt,
-        .meta = meta,
     });
 }
 
@@ -119,12 +104,7 @@ fn_wasm_export void wasm_key_down(char *key, b32 ctrl, b32 shift, b32 alt, b32 m
     if (map.key != app_key_null) {
         wasm_add_event((app_event_t){
             .kind = app_event_kind_key_down,
-            .mouse_pos = wasm_cached.mouse_pos,
             .key = map.key,
-            .ctrl = ctrl,
-            .shift = shift,
-            .alt = alt,
-            .meta = meta,
         });
     }
 
@@ -136,12 +116,7 @@ fn_wasm_export void wasm_key_down(char *key, b32 ctrl, b32 shift, b32 alt, b32 m
     s8_t text = s8_copy(tcx.temp, key8);
     wasm_add_event((app_event_t){
         .kind = app_event_kind_text,
-        .mouse_pos = wasm_cached.mouse_pos,
         .text = text,
-        .ctrl = ctrl,
-        .shift = shift,
-        .alt = alt,
-        .meta = meta,
     });
 }
 
@@ -155,12 +130,7 @@ fn_wasm_export void wasm_key_up(char *key, b32 ctrl, b32 shift, b32 alt, b32 met
     if (map.key != app_key_null) {
         wasm_add_event((app_event_t){
             .kind = app_event_kind_key_up,
-            .mouse_pos = wasm_cached.mouse_pos,
             .key = map.key,
-            .ctrl = ctrl,
-            .shift = shift,
-            .alt = alt,
-            .meta = meta,
         });
     }
 }
@@ -173,14 +143,7 @@ fn_wasm_export b32 wasm_update(f64 time, f64 width, f64 height, f64 dpr) {
     wasm_dpr = dpr;
 
     if (wasm_event_list.first == NULL) {
-        wasm_add_event((app_event_t){
-            .kind = app_event_kind_update,
-            .mouse_pos = wasm_cached.mouse_pos,
-            .alt = wasm_cached.alt,
-            .ctrl = wasm_cached.ctrl,
-            .meta = wasm_cached.meta,
-            .shift = wasm_cached.shift,
-        });
+        wasm_add_event((app_event_t){.kind = app_event_kind_update});
     }
 
     for (app_event_t *ev = wasm_event_list.first; ev; ev = ev->next) {
diff --git a/src/app/app_wasm.html b/src/app/app_wasm.html
index 5bc2f8c..fd36878 100644
--- a/src/app/app_wasm.html
+++ b/src/app/app_wasm.html
@@ -212,6 +212,7 @@ const mem = new memory_t(new WebAssembly['Memory']({ initial: 2000, maximum: 655
         window.requestAnimationFrame(wasm_update);
     }
 
+    addEventListener("resize", (event) => { wake_up(); });
     addEventListener("keydown", (event) => {
         wasm_exports["wasm_key_down"](mem.write_string_to_cglobal("wasm_temp_buff1", event.key), event.ctrlKey, event.shiftKey, event.altKey, event.metaKey);
         wake_up();
diff --git a/src/core/core_lexer.c b/src/core/core_lexer.c
index 6995dcb..87aa300 100644
--- a/src/core/core_lexer.c
+++ b/src/core/core_lexer.c
@@ -120,6 +120,7 @@ fn void lex_token_ex(lexer_t *lex, lex_t *token) {
         case ';': token->kind = lex_kind_semicolon; break;
         case ':': token->kind = lex_kind_colon; break;
         case ',': token->kind = lex_kind_comma; break;
+        case '@': token->kind = lex_kind_tag; break;
         case '"': lex_eat_string(lex, token); break;
         case '`': lex_eat_string(lex, token); break;
         case '\'': lex_eat_string(lex, token); break;
@@ -314,6 +315,12 @@ fn lex_t *parser_expect(parser_t *par, lex_kind_t kind) {
     return token;
 }
 
+fn lex_t *parser_expecti(parser_t *par, s8_t ident) {
+    lex_t *token = parser_matchi(par, ident);
+    if (!token) parser_panicf(par->at, "expected identifier: '%S'", ident);
+    return token;
+}
+
 fn void parser_eat_until(parser_t *par, lex_kind_t kind) {
     while (par->at->kind != kind && par->at->kind != lex_kind_eof) {
         parser_next(par);
diff --git a/src/core/core_lexer.h b/src/core/core_lexer.h
index de3dd9a..41f96d3 100644
--- a/src/core/core_lexer.h
+++ b/src/core/core_lexer.h
@@ -56,6 +56,7 @@ enum lex_kind_t {
         X(lex_kind_colon                  , "':' colon"                        , ":"   )\
         X(lex_kind_arrow                  , "'->' arrow"                       , "->"  )\
         X(lex_kind_question               , "'?' question mark"                , "?"   )\
+        X(lex_kind_tag                    , "'@' tag sign"                     , "@"   )\
 
     #define X(KIND, STR, SIMPLE) KIND,
     LEX_KIND_XLIST
diff --git a/src/core/core_string.h b/src/core/core_string.h
index ee84f4a..f18dd90 100644
--- a/src/core/core_string.h
+++ b/src/core/core_string.h
@@ -31,6 +31,7 @@ struct sb8_t {
     sb8_node_t *first;
     sb8_node_t *last;
 
+    // WARNING: remember to update typeinfo after editing this
     i32 indent;
 };
 
diff --git a/src/core/core_type_info.h b/src/core/core_type_info.h
index e5a1b5c..3084a1f 100644
--- a/src/core/core_type_info.h
+++ b/src/core/core_type_info.h
@@ -46,6 +46,7 @@ struct type_member_t {
     type_t *type;
     i64 value;
     u64 offset;
+    b8 dont_serialize;
 };
 
 //
@@ -120,6 +121,22 @@ gb_read_only type_t type__ma_arena_t = { type_kind_struct, s8_const_lit("ma_aren
     }
 };
 
+gb_read_only type_t type__sb8_node_t = {type_kind_struct, s8_const_lit("sb8_node_t"), sizeof(sb8_t), .count = 2,
+    .members = (type_member_t[]){
+        {s8_const_lit("next"), &POINTER(sb8_node_t), .offset = offsetof(sb8_node_t, next)},
+        {s8_const_lit("string"), &type__s8_t, .offset = offsetof(sb8_node_t, string)},
+    }
+};
+
+gb_read_only type_t type__sb8_t = { type_kind_struct, s8_const_lit("sb8_t"), sizeof(sb8_t), .count = 4,
+    .members = (type_member_t[]){
+        {s8_const_lit("arena"),  &POINTER(ma_arena_t), .offset = offsetof(sb8_t, arena)},
+        {s8_const_lit("first"),  &POINTER(sb8_node_t), .offset = offsetof(sb8_t, first)},
+        {s8_const_lit("last"),   &POINTER(sb8_node_t), .offset = offsetof(sb8_t, last)},
+        {s8_const_lit("indent"), &type__i32, .offset = offsetof(sb8_t, first)},
+    }
+};
+
 gb_read_only type_t type__ma_temp_t = { type_kind_struct, s8_const_lit("ma_temp_t"), sizeof(ma_temp_t), .count = 2,
     .members = (type_member_t[]){
         {s8_const_lit("arena"), &POINTER(ma_arena_t), .offset = offsetof(ma_temp_t, arena)},
diff --git a/src/core_test/core_test_entry.c b/src/core_test/core_test_entry.c
deleted file mode 100644
index 52a17a2..0000000
--- a/src/core_test/core_test_entry.c
+++ /dev/null
@@ -1,115 +0,0 @@
-#include "core/core_inc.h"
-#include "core/core_inc.c"
-
-void test_s8(void) {
-    ma_arena_t *arena = ma_create(ma_default_reserve_size);
-
-    {
-        ma_temp_t temp = ma_begin_temp(arena);
-        sb8_t *sb = &(sb8_t){arena};
-
-        s8_t memes = s8_lit("memes");
-        sb8_printf(sb, "%S", memes);
-        assert(sb->first == sb->last);
-        assert(sb->first->len == 5);
-        assert(s8_equal(sb->first->string, memes));
-
-        sb8_printf(sb, "%S", s8_lit("things are going fine"));
-        s8_t string = sb8_merge(sb);
-        assert(s8_equal(string, s8_lit("memesthings are going fine")));
-
-        ma_end_temp(temp);
-    }
-
-    {
-        s8_t str = s8_lit("thing|another|");
-        sb8_t sb = s8_split(arena, str, s8_lit("|"), s8_split_none);
-
-        assert(s8_equal(sb.first->string, s8_lit("thing")));
-        assert(s8_equal(sb.first->next->string, s8_lit("another")));
-        assert(sb.first->next->next == NULL);
-    }
-
-    {
-        s8_t str = s8_lit("thing|another|");
-        sb8_t sb = s8_split(arena, str, s8_lit("|"), s8_split_inclusive);
-
-        assert(s8_equal(sb.first->string, s8_lit("thing")));
-        assert(s8_equal(sb.first->next->string, s8_lit("|")));
-        assert(s8_equal(sb.first->next->next->string, s8_lit("another")));
-        assert(s8_equal(sb.first->next->next->next->string, s8_lit("|")));
-        assert(sb.first->next->next->next->next == NULL);
-    }
-
-    {
-        s8_t str = s8_lit("aabaaBaa");
-        sb8_t sb = s8_split(arena, str, s8_lit("b"), s8_split_inclusive | s8_split_ignore_case);
-
-        assert(s8_equal(sb.first->string, s8_lit("aa")));
-        assert(s8_equal(sb.first->next->string, s8_lit("b")));
-        assert(s8_equal(sb.first->next->next->string, s8_lit("aa")));
-        assert(s8_equal(sb.first->next->next->next->string, s8_lit("B")));
-        assert(s8_equal(sb.first->next->next->next->next->string, s8_lit("aa")));
-        assert(sb.first->next->next->next->next->next == NULL);
-    }
-
-    {
-        s8_t str = s8_lit("aabaaBaa");
-        sb8_t sb = s8_split(arena, str, s8_lit("b"), s8_split_inclusive);
-
-        assert(s8_equal(sb.first->string, s8_lit("aa")));
-        assert(s8_equal(sb.first->next->string, s8_lit("b")));
-        assert(s8_equal(sb.first->next->next->string, s8_lit("aaBaa")));
-    }
-
-    {
-        s8_t s = s8_lit("0123456789");
-        assert(s8_equal(s8_slice(s, 0, 4), s8_lit("0123")));
-        assert(s8_equal(s8_slice(s, -2, -1), s8_lit("89")));
-        assert(s8_equal(s8_slice(s, -2, 10), s8_lit("89")));
-        assert(s8_equal(s8_slice(s, 8, 10), s8_lit("89")));
-    }
-
-    {
-        s8_t s = s8_lit("    a                  \n");
-        s = s8_trim(s);
-        assert(s8_equal(s, s8_lit("a")));
-    }
-
-    {
-        s8_t s = s8_lit("C:/memes/the_thing.c");
-        s8_t ss = s8_get_name_no_ext(s);
-        assert(s8_equal(ss, s8_lit("the_thing")));
-    }
-
-    {
-        s8_t s = s8_printf(arena, "%d%Sv%s", 32, s8_lit("|"), ">");
-        assert(s8_equal(s, s8_lit("32|v>")));
-    }
-
-    {
-        s8_t s0 = s8_lit("0123456789");
-        s8_t s1 = s8_cut_start(&s0, 2);
-        assert(s8_equal(s0, s8_lit("23456789")));
-        assert(s8_equal(s1, s8_lit("01")));
-    }
-    ma_destroy(arena);
-}
-
-#include <stdio.h>
-
-int main(int argc, char **argv) {
-    printf("PLATFORM_WASM = %d\n", PLATFORM_WASM);
-    printf("PLATFORM_WINDOWS = %d\n", PLATFORM_WINDOWS);
-    printf("PLATFORM_LINUX = %d\n", PLATFORM_LINUX);
-    printf("PLATFORM_POSIX = %d\n", PLATFORM_POSIX);
-    printf("PLATFORM_MAC_OS = %d\n", PLATFORM_MAC_OS);
-    printf("PLATFORM_CLANG = %d\n", PLATFORM_CLANG);
-    printf("PLATFORM_GCC = %d\n", PLATFORM_GCC);
-    printf("PLATFORM_CL = %d\n", PLATFORM_CL);
-    printf("PLATFORM_TCC = %d\n", PLATFORM_TCC);
-
-    test_s8();
-
-    printf("all done!\n");
-}
\ No newline at end of file
diff --git a/src/meta/parser.c b/src/meta/parser.c
index 595338c..3bb6be7 100644
--- a/src/meta/parser.c
+++ b/src/meta/parser.c
@@ -1,19 +1,20 @@
 typedef enum {
 
-#define AST_FLAG_XLIST\
-    X(null)\
-    X(string)\
-    X(integer)\
-    X(real)\
-    X(binary)\
-    X(enum)\
-    X(enum_member)\
-    X(struct)\
-    X(struct_member)\
-    X(var)\
-    X(type_name)\
-    X(type_pointer)\
-    X(type_array)\
+#define AST_FLAG_XLIST \
+    X(null)            \
+    X(string)          \
+    X(integer)         \
+    X(real)            \
+    X(binary)          \
+    X(enum)            \
+    X(enum_member)     \
+    X(struct)          \
+    X(struct_member)   \
+    X(var)             \
+    X(type_name)       \
+    X(type_pointer)    \
+    X(type_array)      \
+    X(dont_serialize)
 
 #define X(NAME) ast_flag_##NAME,
     AST_FLAG_XLIST
@@ -259,6 +260,11 @@ ast_t *parse_decls(ma_arena_t *arena, char *file, s8_t code) {
                 ast_append(mem, type);
 
                 parser_expect(par, lex_kind_semicolon);
+                if (parser_match(par, lex_kind_tag)) {
+                    if (parser_expecti(par, s8_lit("dont_serialize"))) {
+                        mem->flags |= set_bit(ast_flag_dont_serialize);
+                    }
+                }
             }
             parser_expect(par, lex_kind_close_brace);
             parser_expect(par, lex_kind_semicolon);
diff --git a/src/meta/serialize.c b/src/meta/serialize.c
index 50db61e..b1e9216 100644
--- a/src/meta/serialize.c
+++ b/src/meta/serialize.c
@@ -124,7 +124,8 @@ void sb8_serial_ast_to_type_info(sb8_t *sb, ast_t *n) {
         for (ast_t *it = n->first; it; it = it->next) {
             s8_t name = it->string;
             s8_t type_info = s8_serial_ast_type_to_type_info(sb->arena, it->first);
-            sb8_stmtf(sb, "{.name = s8_const_lit(\"%S\"), .type = &%S, .offset = offsetof(%S, %S)},", name, type_info, n->string, name);
+            b32 dont_serialize = (it->flags & set_bit(ast_flag_dont_serialize)) ? true : false;
+            sb8_stmtf(sb, "{.name = s8_const_lit(\"%S\"), .type = &%S, .offset = offsetof(%S, %S), .dont_serialize = %d},", name, type_info, n->string, name, dont_serialize);
         }
         sb->indent -= 1;
         sb8_stmtf(sb, "},");
diff --git a/src/wasm_app/main.c b/src/wasm_app/main.c
index 0dd9858..7f246db 100644
--- a/src/wasm_app/main.c
+++ b/src/wasm_app/main.c
@@ -1,29 +1,65 @@
 #include "core/core_inc.h"
 #include "app/app.h"
-#include "os/os.h"
 
 #include "core/core_inc.c"
 #include "app/app.c"
-#include "os/os.c"
 #include "gfx2d/gfx2d.c"
 
 // #include "ui.c"
 
-gfx_t *gfx = NULL;
+typedef struct ui_widget_t ui_widget_t;
+struct ui_widget_t {
+};
+
+typedef struct ui_t ui_t;
+struct ui_t {
+
+    // update cycle data
+    b8 left_press;
+    b8 left_unpress;
+    b8 left_down;
+    v2f64_t mouse_pos;
+    v2f64_t window_size;
+
+    //
+
+};
+
+gb ui_t   gb_ui = {0};
+gb gfx_t *gfx = NULL;
+
+gb i32 config_indent = 4;
+
+void ui_begin_interaction(ui_t *ui, app_event_t *ev) {
+    ui->mouse_pos = ev->mouse_pos;
+    ui->window_size = ev->window_size;
+    ui->left_press = false;
+    ui->left_unpress = false;
+    if (ev->kind == app_event_kind_mouse_down && ev->mouse_button == app_mouse_button_left) {
+        ui->left_press = true;
+        ui->left_down  = true;
+    }
+    if (ev->kind == app_event_kind_mouse_up && ev->mouse_button == app_mouse_button_left) {
+        ui->left_unpress = true;
+        ui->left_down = false;
+    }
+}
+
+void app_handle_event(app_event_t *ev) {
+    ui_t *ui = &gb_ui;
+    ui_begin_interaction(ui, ev);
+}
 
 void app_init(void) {
     ma_arena_t *perm = &tcx._perm;
     gfx = ma_push_type(perm, gfx_t);
 
-    os_date_t ldate = os_local_time_now();
-    os_date_t udate = os_universal_time_now();
 
-    assert(ldate.hour == (udate.hour + 1));
 }
 
 b32 app_update(app_event_list_t events) {
     for (app_event_t *ev = events.first; ev; ev = ev->next) {
-        // update
+        app_handle_event(ev);
     }
 
     // These steps should be totally optional!!
diff --git a/todo.txt b/todo.txt
index f3e48ee..5d94b24 100644
--- a/todo.txt
+++ b/todo.txt
@@ -1,28 +1,29 @@
-[ ] platform
-    [ ] app
-        [ ] sleep
-        [ ] ui
-        [ ] event playback
-        [ ] how to fix variable scroll? or do we not care?
-        [ ] win32
-            [ ] hot reload / plugins
-            [ ] tests using yield
-        [ ] linux
-    [ ] os
-        [?] wasm (explore)
-            [ ] drag and drop
-            [ ] open file dialog
-        [ ] win32
-        [ ] linux
-    [ ] gfx
-        [ ] simple 2d
-            [ ] revisit api
-            [x] change name, hard to type
+[ ] app
+    [ ] sleep
+    [ ] ui
+    [ ] event playback
+    [ ] how to fix variable scroll? or do we not care? (probably need delta time)
+    [ ] win32
+        [ ] hot reload / plugins
+        [ ] tests using yield
+    [ ] linux
+    [ ] wasm
+        [ ] drag and drop
+        [ ] open file dialog
+[ ] os
+    [?] wasm (explore)
+    [ ] win32
+    [ ] linux
+[ ] gfx
+    [ ] simple 2d
+        [ ] revisit api
+        [x] change name, hard to type
 
 [ ] core
     [x] remove dates and time from core
     [ ] meta
         [x] search for python snippets and execute meta.py script on that file
+        [ ] somehow index properly the meta files and ignore generated files
         [ ] new simple format with tags
     [x] revisit api
     [ ] s8_bin