diff --git a/bind/v4k.lua b/bind/v4k.lua
index 7a92c57..76e3cd0 100644
--- a/bind/v4k.lua
+++ b/bind/v4k.lua
@@ -3337,7 +3337,7 @@ typedef struct skinned_t {
 atlas_t atlas;
 float scale;
 } skinned_t;
- guiskin_t gui_skinned(const char *inifile, float scale);
+ guiskin_t gui_skinned(const char *asefile, float scale);
  void*       thread( int (*thread_func)(void* user_data), void* user_data );
  void        thread_destroy( void *thd );
  int         argc();
diff --git a/engine/joint/v4k.h b/engine/joint/v4k.h
index ff3794c..864df6e 100644
--- a/engine/joint/v4k.h
+++ b/engine/joint/v4k.h
@@ -18146,12 +18146,30 @@ API void    gui_popskin();
 // default renderers
 
 /// skinned
+/* The skinning engine depends on an Aseprite asset with slices set up.
+   While you can specify your own skins for various GUI widgets, some
+   skin variants are hardcoded and expected to be present in your asset:
+
+   gui_panel():
+    - "panel" (overridable)
+   gui_button():
+    - "button" (base overridable)
+      - "_hover" (ex. "scarybtn_hover")
+      - "_press"
+   gui_rect():
+    - no defaults, always pass your own skin/slice name
+   gui_slider():
+    - "slider" (overridable)
+    - "slider_cursor" (partially overridable, ex. "bigslider_cursor")
+      - "_hover" (ex. "slider_cursor_hover")
+      - "_press"
+*/
 typedef struct skinned_t {
     atlas_t atlas;
     float scale;
 } skinned_t;
 
-API guiskin_t gui_skinned(const char *inifile, float scale);
+API guiskin_t gui_skinned(const char *asefile, float scale);
 #line 0
 
 #line 1 "v4k_system.h"
@@ -359237,9 +359255,9 @@ void skinned_getscissorrect(void* userdata, const char *skin, vec4 rect, vec4 *d
     dims->w -= (skinsize.y - coresize.y);
 }
 
-guiskin_t gui_skinned(const char *inifile, float scale) {
+guiskin_t gui_skinned(const char *asefile, float scale) {
     skinned_t *a = REALLOC(0, sizeof(skinned_t));
-    a->atlas = atlas_create(inifile, 0);
+    a->atlas = atlas_create(asefile, 0);
     a->scale = scale?scale:1.0f;
     guiskin_t skin={0};
     skin.userdata = a;
diff --git a/engine/split/v4k_gui.c b/engine/split/v4k_gui.c
index 5d475cd..e2bf9f7 100644
--- a/engine/split/v4k_gui.c
+++ b/engine/split/v4k_gui.c
@@ -392,9 +392,9 @@ void skinned_getscissorrect(void* userdata, const char *skin, vec4 rect, vec4 *d
     dims->w -= (skinsize.y - coresize.y);
 }
 
-guiskin_t gui_skinned(const char *inifile, float scale) {
+guiskin_t gui_skinned(const char *asefile, float scale) {
     skinned_t *a = REALLOC(0, sizeof(skinned_t));
-    a->atlas = atlas_create(inifile, 0);
+    a->atlas = atlas_create(asefile, 0);
     a->scale = scale?scale:1.0f;
     guiskin_t skin={0};
     skin.userdata = a;
diff --git a/engine/split/v4k_gui.h b/engine/split/v4k_gui.h
index 7844a56..bed0267 100644
--- a/engine/split/v4k_gui.h
+++ b/engine/split/v4k_gui.h
@@ -31,9 +31,27 @@ API void    gui_popskin();
 // default renderers
 
 /// skinned
+/* The skinning engine depends on an Aseprite asset with slices set up.
+   While you can specify your own skins for various GUI widgets, some
+   skin variants are hardcoded and expected to be present in your asset:
+
+   gui_panel():
+    - "panel" (overridable)
+   gui_button():
+    - "button" (base overridable)
+      - "_hover" (ex. "scarybtn_hover")
+      - "_press"
+   gui_rect():
+    - no defaults, always pass your own skin/slice name
+   gui_slider():
+    - "slider" (overridable)
+    - "slider_cursor" (partially overridable, ex. "bigslider_cursor")
+      - "_hover" (ex. "slider_cursor_hover")
+      - "_press"
+*/
 typedef struct skinned_t {
     atlas_t atlas;
     float scale;
 } skinned_t;
 
-API guiskin_t gui_skinned(const char *inifile, float scale);
+API guiskin_t gui_skinned(const char *asefile, float scale);
diff --git a/engine/v4k.c b/engine/v4k.c
index 1e545fa..e0cc27d 100644
--- a/engine/v4k.c
+++ b/engine/v4k.c
@@ -11402,9 +11402,9 @@ void skinned_getscissorrect(void* userdata, const char *skin, vec4 rect, vec4 *d
     dims->w -= (skinsize.y - coresize.y);
 }
 
-guiskin_t gui_skinned(const char *inifile, float scale) {
+guiskin_t gui_skinned(const char *asefile, float scale) {
     skinned_t *a = REALLOC(0, sizeof(skinned_t));
-    a->atlas = atlas_create(inifile, 0);
+    a->atlas = atlas_create(asefile, 0);
     a->scale = scale?scale:1.0f;
     guiskin_t skin={0};
     skin.userdata = a;
diff --git a/engine/v4k.h b/engine/v4k.h
index 69e67f4..b2edc05 100644
--- a/engine/v4k.h
+++ b/engine/v4k.h
@@ -4213,12 +4213,30 @@ API void    gui_popskin();
 // default renderers
 
 /// skinned
+/* The skinning engine depends on an Aseprite asset with slices set up.
+   While you can specify your own skins for various GUI widgets, some
+   skin variants are hardcoded and expected to be present in your asset:
+
+   gui_panel():
+    - "panel" (overridable)
+   gui_button():
+    - "button" (base overridable)
+      - "_hover" (ex. "scarybtn_hover")
+      - "_press"
+   gui_rect():
+    - no defaults, always pass your own skin/slice name
+   gui_slider():
+    - "slider" (overridable)
+    - "slider_cursor" (partially overridable, ex. "bigslider_cursor")
+      - "_hover" (ex. "slider_cursor_hover")
+      - "_press"
+*/
 typedef struct skinned_t {
     atlas_t atlas;
     float scale;
 } skinned_t;
 
-API guiskin_t gui_skinned(const char *inifile, float scale);
+API guiskin_t gui_skinned(const char *asefile, float scale);
 #line 0
 
 #line 1 "v4k_system.h"