diff --git a/desk.acc/a2d.inc b/desk.acc/a2d.inc
index 79d2985..41eac7a 100644
--- a/desk.acc/a2d.inc
+++ b/desk.acc/a2d.inc
@@ -88,8 +88,12 @@ A2D_HIDE_CURSOR := $26
 
 A2D_GET_INPUT  := $2A
         ;; .byte state     (0=up, 1=press, 2=release, 3=key, 4=held)
-        ;; .byte key       (ASCII code; high bit clear)
-        ;; .byte modifiers (0=none, 1=open-apple, 2=closed-apple, 3=both)
+        ;; if state is not 3:
+        ;;   .byte key       (ASCII code; high bit clear)
+        ;;   .byte modifiers (0=none, 1=open-apple, 2=closed-apple, 3=both)
+        ;; if state is 3:
+        ;;   .word xcoord
+        ;;   .word ycoord
 
 A2D_UNK_2B      := $2B          ; Unknown
         ;; no parameters (pass $0000 as address)
@@ -135,9 +139,9 @@ A2D_DESTROY_WINDOW := $39
 
 A2D_UNK_3C      := $3C          ; Unknown, used in calculator
 
-A2D_GET_MOUSE   := $40
-        ;; .word x              (relative to screen)
-        ;; .word y
+A2D_QUERY_TARGET   := $40
+        ;; .word queryx         (relative to screen)
+        ;; .word queryy
         ;; .byte element        (A2D_ELEM_*)
         ;;      0 = desktop
         ;;      1 = menu
diff --git a/desk.acc/calculator.s b/desk.acc/calculator.s
index ee7d461..4bb88e3 100644
--- a/desk.acc/calculator.s
+++ b/desk.acc/calculator.s
@@ -158,8 +158,8 @@ L08C4:  rts
 .proc map_coords_params
 id      := *
 screen  := * + 1
-screenx := * + 1 ; aligns with get_mouse_params::xcoord
-screeny := * + 3 ; aligns with get_mouse_params::ycoord
+screenx := * + 1 ; aligns with target_params::xcoord
+screeny := * + 3 ; aligns with target_params::ycoord
 client  := * + 5
 clientx := * + 5
 clienty := * + 7
@@ -167,19 +167,21 @@ clienty := * + 7
 
 .proc input_state_params
 state:  .byte   0
-key     := *
-modifiers := * + 1
+xcoord    := *                  ; if state is 0,1,2,4
+ycoord    := * + 2              ; "
+key       := *                  ; if state is 3
+modifiers := * + 1              ; "
 .endproc
 
-.proc get_mouse_params
-xcoord: .word   0
-ycoord: .word   0
+.proc target_params
+queryx: .word   0               ; aligns with input_state_params::xcoord
+queryy: .word   0               ; aligns with input_state_params::ycoord
 elem:   .byte   0
 id:     .byte   0
-        .word   0               ; ???
 .endproc
 
-        .byte $00,$00
+        .byte 0, 0              ; fills out space for map_coords_params
+        .byte 0, 0              ; ???
 
 .proc button_click_params
 state:  .byte   0
@@ -723,19 +725,19 @@ input_loop:
 on_click:
         lda     LCBANK1
         lda     LCBANK1
-        A2D_CALL A2D_GET_MOUSE, get_mouse_params
+        A2D_CALL A2D_QUERY_TARGET, target_params
         lda     ROMIN2
-        lda     get_mouse_params::elem
+        lda     target_params::elem
         cmp     #A2D_ELEM_CLIENT ; Less than CLIENT is MENU or DESKTOP
         bcc     ignore_click
-        lda     get_mouse_params::id
+        lda     target_params::id
         cmp     #window_id      ; This window?
         beq     :+
 
 ignore_click:
         rts
 
-:       lda     get_mouse_params::elem
+:       lda     target_params::elem
         cmp     #A2D_ELEM_CLIENT ; Client area?
         bne     :+
         jsr     map_click_to_button ; try to translate click into key
diff --git a/desk.acc/show_text_file.s b/desk.acc/show_text_file.s
index d89b640..4bdba0e 100644
--- a/desk.acc/show_text_file.s
+++ b/desk.acc/show_text_file.s
@@ -245,12 +245,13 @@ track_scroll_delta:
 fixed_mode_flag:
         .byte   $00             ; 0 = proportional, otherwise = fixed
 
-input_params:                   ; queried to track mouse-up
-        .byte   $00
-
-.proc mouse_params              ; queried by main input loop
+.proc input_params
+state:  .byte   0
+coords:                         ; spills into target query
 xcoord: .word   0
 ycoord: .word   0
+.endproc
+.proc target_params
 elem:   .byte   0
 win:    .byte   0
 .endproc
@@ -515,24 +516,24 @@ input_loop:
         cmp     #1              ; was clicked?
         bne     input_loop      ; nope, keep waiting
 
-        A2D_CALL A2D_GET_MOUSE, mouse_params
-        lda     mouse_params::win ; in our window?
+        A2D_CALL A2D_QUERY_TARGET, input_params::coords
+        lda     target_params::win ; in our window?
         cmp     #window_id
         bne     input_loop
 
         ;; which part of the window?
-        lda     mouse_params::elem
+        lda     target_params::elem
         cmp     #A2D_ELEM_CLOSE
         beq     on_close_click
 
         ;; title and resize clicks need mouse location
-        ldx     mouse_params::xcoord
+        ldx     input_params::xcoord
         stx     resize_drag_params::xcoord
         stx     query_client_params::xcoord
-        ldx     mouse_params::xcoord+1
+        ldx     input_params::xcoord+1
         stx     resize_drag_params::xcoord+1
         stx     query_client_params::xcoord+1
-        ldx     mouse_params::ycoord
+        ldx     input_params::ycoord
         stx     resize_drag_params::ycoord
         stx     query_client_params::ycoord
 
@@ -857,11 +858,11 @@ store:  sta     window_params::hscroll_pos
 
         ;; Used at start of thumb drag
 .proc do_thumb_drag
-        lda     mouse_params::xcoord
+        lda     input_params::xcoord
         sta     thumb_drag_params::xcoord
-        lda     mouse_params::xcoord+1
+        lda     input_params::xcoord+1
         sta     thumb_drag_params::xcoord+1
-        lda     mouse_params::ycoord
+        lda     input_params::ycoord
         sta     thumb_drag_params::ycoord
         A2D_CALL A2D_DRAG_SCROLL, thumb_drag_params
         rts
@@ -1365,10 +1366,10 @@ end:    rts
 ;;; Title Bar (Proportional/Fixed mode button)
 
 .proc on_title_bar_click
-        lda     mouse_params::xcoord+1           ; mouse x high byte?
+        lda     input_params::xcoord+1           ; mouse x high byte?
         cmp     mode_box_left+1
         bne     :+
-        lda     mouse_params::xcoord
+        lda     input_params::xcoord
         cmp     mode_box_left
 :       bcc     ignore