diff --git a/src/pitchdark.a b/src/pitchdark.a
index 4d66b45..e02f4cc 100644
--- a/src/pitchdark.a
+++ b/src/pitchdark.a
@@ -80,13 +80,5 @@ MainScreen
          jsr   HandleKey             ; handle keypresses
          bra   .mainRunLoop
 
-ExitWeeGUI
-         ldx   #WGDisableMouse       ; disable mouse support before quitting
-         jsr   WeeGUI
-         ldx   #WGClearScreen        ; clear screen (HOME)
-         jsr   WeeGUI
-         ldx   #WGExit               ; clean up WeeGUI
-         jmp   WeeGUI
-
 gGamesListStore
          !word *+2                   ; address of first okvs store
diff --git a/src/ui.common.a b/src/ui.common.a
index 80f26a1..a98a1ba 100644
--- a/src/ui.common.a
+++ b/src/ui.common.a
@@ -5,6 +5,7 @@
 ;
 ; Public functions
 ; - HardResetWeeGUI
+; - ExitWeeGUI
 ; - CreateRadio
 ; - CreateCheckbox
 ; - CreateButton
@@ -35,6 +36,7 @@ kStringCancel
 ; out:   PARAM0/PARAM1 clobbered
 ;        all registers clobbered
 ;------------------------------------------------------------------------------
+!zone {
 HardResetWeeGUI
          lda   #15                   ; highest possible WeeGUI view ID
          sta   kHardResetDummyView
@@ -49,6 +51,25 @@ HardResetWeeGUI
          jmp   WeeGUI
 kHardResetDummyView
          !byte 0,0,0,0,0,0,0,0
+}
+
+;------------------------------------------------------------------------------
+; ExitWeeGUI
+; clears the screen and safely shuts down WeeGUI
+;
+; in:    WeeGUI initialized
+; out:   A,Y preserved
+;        X clobbered
+;------------------------------------------------------------------------------
+!zone {
+ExitWeeGUI
+         ldx   #WGDisableMouse       ; disable mouse support before quitting
+         jsr   WeeGUI
+         ldx   #WGClearScreen        ; clear screen (HOME)
+         jsr   WeeGUI
+         ldx   #WGExit               ; clean up WeeGUI
+         jmp   WeeGUI
+}
 
 ;------------------------------------------------------------------------------
 ; CreateRadio/CreateCheckbox/CreateButton
diff --git a/src/ui.versions.a b/src/ui.versions.a
index 1960c05..d72e32b 100644
--- a/src/ui.versions.a
+++ b/src/ui.versions.a
@@ -72,7 +72,7 @@ VersionsDialog
 
          jsr   okvs_len
          !word gVersionsStore
-         sta   .numVersions
+         sta   iNumVersions
 
          asl
          inc
@@ -80,7 +80,7 @@ VersionsDialog
          sta   kViewVersionsFrame+7  ; frame height
          lda   #12
          sec
-         sbc   .numVersions
+         sbc   iNumVersions
          sta   kViewVersionsFrame+3  ; frame top = 12 - numVersions
          inc
          sta   kViewVersionsOK+2     ; OK top = frame top + 1
@@ -119,7 +119,7 @@ VersionsDialog
 +        !word $FDFD                 ; SMC
          plx
          inx
-.numVersions=*+1
+iNumVersions=*+1
          cpx   #$FD                  ; SMC
          bne   .createRadioLoop
 
@@ -157,7 +157,7 @@ VersionsDialog
          jsr   WeeGUI
 
          lda   #1                    ; WeeGUI radio buttons are limited to 15 characters, so we have just the
-         sta   .vtab                 ; hotkeys (1-9) 'in' the radio button then print the labels separately
+         sta   iVersionsVTAB         ; hotkeys (1-9) 'in' the radio button then print the labels separately
          jsr   okvs_iter_values
          !word gVersionsStore
          !word PrintVersionLabelCallback
@@ -178,17 +178,22 @@ VersionsDialog
 ; internal functions
 
 PrintVersionLabelCallback
+; called via okvs_iter_values
+; X = index (0-based) into gVersionsStore
+; A/Y points to okvs record value, which we use to create a printable label
          ldx   #50
          jsr   CreateNullTerminatedString
          jsr   PrintAt
          !byte 7                     ; htab (constant)
-.vtab    !byte $FD                   ; SMC
+iVersionsVTAB
+         !byte $FD                   ; SMC
          !word kNullTerminatedBuffer
-         inc   .vtab
-         inc   .vtab
+         inc   iVersionsVTAB
+         inc   iVersionsVTAB
          rts
 
 HandleVersionsKey
+; A = key code from $C000
          ldx   #.endkeys-.keys
 -        cmp   .keys,x
          beq   .foundKey
@@ -215,7 +220,7 @@ HandleVersionsKey
          lda   #$FD                  ; SMC
          cmp   #ID_VERSIONS_PREVIOUS
          beq   .previous
-         cpx   .numVersions          ; find 'next' view ID (wrapping around to 1)
+         cpx   iNumVersions          ; find 'next' view ID (wrapping around to 1)
          bcs   +
          inx
          !byte $2C
@@ -224,7 +229,7 @@ HandleVersionsKey
 .previous
          dex
          bne   .gotNewID
-         ldx   .numVersions
+         ldx   iNumVersions
 .gotNewID
          txa
          ldx   #WGSelectView         ; check new radio button and repaint it
@@ -250,7 +255,7 @@ GetCheckedVersion
          lda   #ID_VERSIONS_1
          pha
          clc
-         adc   .numVersions          ; .numVersions was populated during VersionsDialog and hasn't changed since
+         adc   iNumVersions          ; iNumVersions was populated during VersionsDialog and hasn't changed since
          tay
          pla
          jmp   GetCheckedRadioButton