diff -r b367c7e56eb9 src/settings_gui.cpp
--- a/src/settings_gui.cpp	Sun Nov 16 17:01:56 2008 +0100
+++ b/src/settings_gui.cpp	Mon Nov 17 20:29:38 2008 +0100
@@ -591,6 +591,8 @@
 	PEF_LEFT_DEPRESSED  = 0x01, ///< Of a numeric patch entry, the left button is depressed
 	PEF_RIGHT_DEPRESSED = 0x02, ///< Of a numeric patch entry, the right button is depressed
 
+	PEF_LAST_FIELD = 0x04, ///< This entry is the last one in a (sub-)page
+
 	/* Entry kind */
 	PEF_SETTING_KIND = 0x10, ///< Entry kind: Entry is a setting
 	PEF_SUBTREE_KIND = 0x20, ///< Entry kind: Entry is a sub-tree
@@ -599,9 +601,10 @@
 
 struct PatchPage; // Forward declaration
 
-/** Data structure describing a single patch in a tab */
+/** Data structure describing either a single patch in a page, or a complete sub-page */
 struct PatchEntry {
-	uint16 flags;               ///< Flags of the pach entry. @see PatchEntryFlags
+	uint16 flags;  ///< Flags of the pach entry. @see PatchEntryFlags
+	byte level;    ///< Nesting level of this patch entry
 	union {
 		struct {
 			const char *name;           ///< Name of the setting
@@ -618,7 +621,7 @@
 	PatchEntry(const char *nm);
 	PatchEntry(PatchPage *page, StringID title);
 
-	void Init();
+	void Init(byte level, bool last_field);
 	PatchEntry *FindEntry(uint row, uint *cur_row);
 	byte Length() const;
 
@@ -634,7 +637,7 @@
 	PatchEntry *entries; ///< Array of patch entries of the page.
 	byte num;            ///< Number of entries on the page (statically filled).
 
-	void Init();
+	void Init(byte level = 0);
 	PatchEntry *FindEntry(uint row, uint *cur_row) const;
 	byte Length() const;
 
@@ -647,6 +650,7 @@
 PatchEntry::PatchEntry(const char *nm)
 {
 	flags = PEF_SETTING_KIND;
+	level = 0;
 	d.entry.name = nm;
 	d.entry.setting = NULL;
 	d.entry.index = 0;
@@ -656,21 +660,29 @@
 PatchEntry::PatchEntry(PatchPage *sub, StringID str)
 {
 	flags = PEF_SUBTREE_KIND;
+	level = 0;
 	d.sub.page = sub;
 	d.sub.folded = true;
 	d.sub.title = str;
 }
 
-/** Initialization of a patch entry */
-void PatchEntry::Init()
+/**
+ * Initialization of a patch entry
+ * @param lvl        Page nesting level of this entry
+ * @param last_field Boolean indicating this entry is the last at the (sub-)page
+ */
+void PatchEntry::Init(byte lvl, bool last_field)
 {
+	level = lvl;
+	if (last_field) flags |= PEF_LAST_FIELD;
+
 	switch(flags & PEF_KIND_MASK) {
 		case PEF_SETTING_KIND:
 			d.entry.setting = GetPatchFromName(d.entry.name, &d.entry.index);
 			assert(d.entry.setting != NULL);
 			break;
 		case PEF_SUBTREE_KIND:
-			d.sub.page->Init();
+			d.sub.page->Init(lvl + 1);
 			break;
 		default: NOT_REACHED();
 	}
@@ -822,11 +834,13 @@
 
 /* == PatchPage methods == */
 
-/** Initialization of an entire patch page */
-void PatchPage::Init()
+/**
+ * Initialization of an entire patch page
+ * @param level Nesting level of this page (internal variable, do not provide a value for it when calling)*/
+void PatchPage::Init(byte level)
 {
 	for (uint fld = 0; fld < num; fld++)
-		entries[fld].Init();
+		entries[fld].Init(level, fld + 1 == num);
 }
 
 /**