diff --git a/a2d.inc b/a2d.inc
index 4ef815b..115dae7 100644
--- a/a2d.inc
+++ b/a2d.inc
@@ -199,10 +199,13 @@ A2D_SET_CURSOR  := $24          ; Set cursor definition
         ;; .byte hotx           hotspot coords
         ;; .byte hoty
 
-A2D_SHOW_CURSOR := $25
+A2D_SHOW_CURSOR := $25          ; Return cursor to visibility
         ;; (no parameters; pass $0000 as address)
 
-A2D_HIDE_CURSOR := $26
+A2D_HIDE_CURSOR := $26          ; Cursor hidden until A2D_SHOW_CURSOR call
+        ;; (no parameters; pass $0000 as address)
+
+A2D_ERASE_CURSOR := $27         ; Cursor hidden until moved or other A2D call
         ;; (no parameters; pass $0000 as address)
 
 A2D_GET_CURSOR := $28           ; Get cursor definition
diff --git a/desktop/s123_aux.s b/desktop/s123_aux.s
index 6ebc59c..00d9ad6 100644
--- a/desktop/s123_aux.s
+++ b/desktop/s123_aux.s
@@ -316,7 +316,7 @@ a2d_jump_table:
         .addr   SET_CURSOR_IMPL     ; $24 SET_CURSOR
         .addr   SHOW_CURSOR_IMPL    ; $25 SHOW_CURSOR
         .addr   HIDE_CURSOR_IMPL    ; $26 HIDE_CURSOR
-        .addr   L624E               ; $27
+        .addr   ERASE_CURSOR_IMPL   ; $27 ERASE_CURSOR
         .addr   GET_CURSOR_IMPL     ; $28 GET_CURSOR
         .addr   L6663               ; $29
         .addr   GET_INPUT_IMPL      ; $2A GET_INPUT
@@ -404,7 +404,7 @@ param_lengths:
         PARAM_DEFN  0, $00, 0           ; $24 SET_CURSOR
         PARAM_DEFN  0, $00, 0           ; $25 SHOW_CURSOR
         PARAM_DEFN  0, $00, 0           ; $26 HIDE_CURSOR
-        PARAM_DEFN  0, $00, 0           ; $27
+        PARAM_DEFN  0, $00, 0           ; $27 ERASE_CURSOR
         PARAM_DEFN  0, $00, 0           ; $28 GET_CURSOR
         PARAM_DEFN  0, $00, 0           ; $29
         PARAM_DEFN  0, $00, 0           ; $2A GET_INPUT
@@ -3942,9 +3942,9 @@ done:   plp
 
 ;;; ==================================================
 
-;;; $27 IMPL
+;;; ERASE_CURSOR IMPL
 
-L624E:
+.proc ERASE_CURSOR_IMPL
         php
         sei
         jsr     restore_cursor_background
@@ -3952,6 +3952,7 @@ L624E:
         sta     cursor_flag
         plp
         rts
+.endproc
 
 ;;; ==================================================