diff --git a/include/twn_util.h b/include/twn_util.h
index dd854cf..8f81bd2 100644
--- a/include/twn_util.h
+++ b/include/twn_util.h
@@ -55,6 +55,7 @@ TWN_API void log_vec2(Vec2 value, char const *identity);
 TWN_API void log_vec3(Vec3 value, char const *identity);
 TWN_API void log_rect(Rect value, char const *identity);
 
+/* IDEA: NES debugger style frame slices that show for how long and when certain profile range takes place */
 TWN_API void profile_start(char const *profile);
 TWN_API void profile_end(char const *profile);
 
diff --git a/src/twn_util.c b/src/twn_util.c
index fd1b67e..31bcaee 100644
--- a/src/twn_util.c
+++ b/src/twn_util.c
@@ -177,7 +177,7 @@ String file_read(char const *file, char const *operation) {
         return s;
     }
 
-    if (SDL_strncmp(operation, ":binary", sizeof (":binary") - 1) == 0) {
+    else if (SDL_strncmp(operation, ":binary", sizeof (":binary") - 1) == 0) {
         uint8_t *data;
         int64_t length = file_to_bytes(file, &data);
 
@@ -189,6 +189,10 @@ String file_read(char const *file, char const *operation) {
 
         return s;
 
+    } else if (SDL_strncmp(operation, ":exists", sizeof (":exists") - 1) == 0) {
+        bool exists = file_exists(file);
+        return exists ? (String){"yes", 3} : (String){"no", 2};
+
     } else
         log_warn("No valid operation specified by %s", operation);