diff --git a/src/VulkanRenderer b/src/VulkanRenderer
index 0be80e3..cd9e3bb 160000
--- a/src/VulkanRenderer
+++ b/src/VulkanRenderer
@@ -1 +1 @@
-Subproject commit 0be80e3a3ec2acfc51f6591803bbe3f889389d22
+Subproject commit cd9e3bb36a68c4c3fd8248afe8abc9930e759f38
diff --git a/src/dlib b/src/dlib
index 4f3082f..a97309c 160000
--- a/src/dlib
+++ b/src/dlib
@@ -1 +1 @@
-Subproject commit 4f3082f71d5a877dc34163dac5f1b12a02d5a02c
+Subproject commit a97309cb04e0e802047586a5bacbacc9b8e9649b
diff --git a/src/editor/buffer.d b/src/editor/buffer.d
index b865459..8f73444 100644
--- a/src/editor/buffer.d
+++ b/src/editor/buffer.d
@@ -47,6 +47,8 @@ struct LineBuffers
 	LineBuffer* first;
 	LineBuffer* last;
 	u64         count;
+	u64         start;
+	u64         end;
 }
 
 struct LineBuffer
@@ -125,7 +127,7 @@ CreateFlatBuffer(u8[] data)
 void
 Change(FlatBuffer* fb, u8[] data)
 {
-	FreeArray(fb.data);
+	Free(fb.data);
 
 	u64 cap = data.length > 0 ? RoundUp(cast(u64)(data.length) * 2, KB(4)) : KB(4);
 
@@ -157,7 +159,7 @@ Fix(FlatBuffer* fb)
 	with(fb)
 	{
 		Reset(&ls_arena);
-		line_starts = AllocArray!(LineStart)(&ls_arena, lf_count+1);
+		line_starts = Alloc!(LineStart)(&ls_arena, lf_count+1);
 		line_starts[0].pos = 0;
 
 		u16 ignore, pending_level, level;
@@ -223,8 +225,8 @@ Insert(FlatBuffer* fb, u8[] insert, u64 length, u64 pos)
 {
 	if(fb.length + length > fb.data.length)
 	{
-		fb.tk.buffer = ReallocArray!(TokenStyle)(fb.tk.buffer, fb.data.length*2);
-		fb.data = ReallocArray!(u8)(fb.data, fb.data.length*2);
+		fb.tk.buffer = Realloc!(TokenStyle)(fb.tk.buffer, fb.data.length*2);
+		fb.data = Realloc!(u8)(fb.data, fb.data.length*2);
 	}
 
 	u64 prev_lf = fb.lf_count;
@@ -281,7 +283,7 @@ Insert(FlatBuffer* fb, u8[] insert, u64 length, u64 pos)
 
 	u64 temp_len = fb.length-pos;
 
-	u8[] temp = AllocCopySlice!(u8)(&fb.arena, fb.data, pos, temp_len);
+	u8[] temp = Alloc!(u8)(&fb.arena, fb.data, pos, temp_len);
 
 	fb.data[pos .. pos+length] = insert[0 .. length];
 	pos += length;
@@ -425,29 +427,29 @@ GetLines(FlatBuffer* fb, LineBuffers* linebufs, u64 start_line, u64 length)
 	linebufs.count = 0;
 
 	u64 total_lines = fb.line_starts.length;
-	start_line = Min(start_line, total_lines);
-	u64 end_line = Min(start_line + length, total_lines);
+	linebufs.start  = Min(start_line, total_lines);
+	linebufs.end    = Min(start_line + length, total_lines);
 
 	if(fb.length == 0)
 	{
 		linebufs.first.text = Alloc!(u8)(&linebufs.arena, 1);
 		linebufs.first.style = Alloc!(TS)(&linebufs.arena, 1);
 	}
-	else if(start_line == end_line) with(fb)
+	else if(linebufs.start == linebufs.end) with(fb)
 	{
-		SliceLineBuffer(fb, linebufs, linebufs.first, line_starts[start_line].pos, LineLength(fb, start_line));
+		SliceLineBuffer(fb, linebufs, linebufs.first, line_starts[linebufs.start].pos, LineLength(fb, linebufs.start));
 	}
 	else with(linebufs)
 	{
 		LineBuffer* current = first;
-		for(u64 i = start_line; i < end_line; i += 1)
+		for(u64 i = start; i < end; i += 1)
 		{
-			u64 start = fb.line_starts[i].pos;
+			u64 start_pos = fb.line_starts[i].pos;
 			u64 len = LineLength(fb, i);
 
 			if(len > 0)
 			{
-				SliceLineBuffer(fb, linebufs, current, start, len);
+				SliceLineBuffer(fb, linebufs, current, start_pos, len);
 				current.next = Alloc!(LineBuffer)(&arena);
 				current = current.next;
 			}
@@ -913,7 +915,7 @@ Delete(FlatBuffer* fb, u64 length, u64 pos)
 	u8[] temp;
 	if(end != fb.length)
 	{
-		temp = AllocArray!(u8)(&fb.arena, fb.length-end);
+		temp = Alloc!(u8)(&fb.arena, fb.length-end);
 		temp[0 .. temp.length] = fb.data[end .. fb.length];
 		fb.data[pos .. pos+temp.length] = temp[0 .. temp.length];
 	}
diff --git a/src/editor/editor.d b/src/editor/editor.d
index 56b02ec..f6f514a 100644
--- a/src/editor/editor.d
+++ b/src/editor/editor.d
@@ -209,7 +209,7 @@ InitEditorCtx(PlatformWindow* window)
 				count += 1;
 			}
 
-			ctx.file_names = AllocArray!(u8[])(&ctx.arena, count);
+			ctx.file_names = Alloc!(u8[])(&ctx.arena, count);
 
 			count = 0;
 			foreach(DirEntry e; dirEntries(".", SpanMode.breadth))
@@ -217,7 +217,7 @@ InitEditorCtx(PlatformWindow* window)
 				if(indexOf(e.name, ".git") != -1 || e.isDir) continue;
 
 				u64 start = indexOf(e.name, "./") == 0 ? 2 : 0;
-				ctx.file_names[count++] = AllocCopy!(u8)(&ctx.arena, CastStr!(u8)(e.name[start .. $]));
+				ctx.file_names[count++] = Alloc!(u8)(&ctx.arena, CastStr!(u8)(e.name[start .. $]));
 			}
 		}
 		catch(Exception e)
@@ -234,7 +234,7 @@ CreatePanel(EditorCtx* ctx, SizeType size_type = ST.Percentage)
 {
 	UIPanel* p = Alloc!(UIPanel)(&ctx.arena);
 	p.axis = A2D.Y;
-	p.id = AllocArray!(u8)(&ctx.arena, 10);
+	p.id = Alloc!(u8)(&ctx.arena, 10);
 	p.pct = 1.0;
 	(cast(char[])p.id).sformat("##%08s", ctx.panel_id);
 	p.parent = p.first = p.last = p.next = p.prev = g_UI_NIL_PANEL;
@@ -866,7 +866,7 @@ GetCommands(CmdPalette* cmd)
 	];
 
 	Reset(&cmd.arena);
-	cmd.commands = AllocArray!(Command)(&cmd.arena, cmd_list.length);
+	cmd.commands = Alloc!(Command)(&cmd.arena, cmd_list.length);
 	cmd.params = [];
 
 	u8[] str = cmd.buffer[0 .. cmd.icount];
@@ -893,7 +893,7 @@ GetCommands(CmdPalette* cmd)
 		cmd.commands = cmd.commands[0 .. count];
 	}
 
-	cmd.opt_strs = AllocArray!(u8[])(&cmd.arena, cmd.commands.length);
+	cmd.opt_strs = Alloc!(u8[])(&cmd.arena, cmd.commands.length);
 	for(u64 i = 0; i < cmd.commands.length; i += 1)
 	{
 		cmd.opt_strs[i] = cmd.commands[i].name;
@@ -1021,7 +1021,7 @@ Check(CmdPalette* cmd, u64 length)
 {
 	if(cmd.icount+length >= cmd.buffer.length)
 	{
-		cmd.buffer = ReallocArray!(u8)(cmd.buffer, cmd.buffer.length*2);
+		cmd.buffer = Realloc!(u8)(cmd.buffer, cmd.buffer.length*2);
 	}
 }
 
@@ -1047,8 +1047,8 @@ PopulateParams(CmdPalette* cmd, u8[][] strs)
 	u8[] param = GetParam(cmd);
 	if(cmd.params.length == 0 || !param.length)
 	{
-		cmd.params = AllocArray!(Parameter)(&cmd.cmd_arena, strs.length);
-		cmd.opt_strs = AllocArray!(u8[])(&cmd.cmd_arena, strs.length);
+		cmd.params = Alloc!(Parameter)(&cmd.cmd_arena, strs.length);
+		cmd.opt_strs = Alloc!(u8[])(&cmd.cmd_arena, strs.length);
 
 		for(u64 i = 0; i < cmd.params.length; i += 1)
 		{
@@ -1060,7 +1060,7 @@ PopulateParams(CmdPalette* cmd, u8[][] strs)
 
 	if(param.length)
 	{
-		cmd.opt_strs = AllocArray!(u8[])(&cmd.cmd_arena, strs.length);
+		cmd.opt_strs = Alloc!(u8[])(&cmd.cmd_arena, strs.length);
 
 		u64 matches;
 		for(u64 i = 0; i < cmd.params.length; i += 1)
diff --git a/src/editor/parsing.d b/src/editor/parsing.d
index 875e7a6..cecc039 100644
--- a/src/editor/parsing.d
+++ b/src/editor/parsing.d
@@ -436,7 +436,7 @@ void
 ResetTokenizer(FlatBuffer* fb)
 {
 	Reset(&fb.tk.arena);
-	FreeArray(fb.tk.buffer);
+	Free(fb.tk.buffer);
 
 	fb.tk.buffer = Alloc!(TS)(fb.data.length);
 	fb.tk.pos = 0;
diff --git a/src/editor/ui.d b/src/editor/ui.d
index 3930a8c..cb615b8 100644
--- a/src/editor/ui.d
+++ b/src/editor/ui.d
@@ -1250,12 +1250,12 @@ MakeMultiline(u8[] text, f32 width, TS[] style = [])
 			{
 				u64 len = i-start;
 
-				u8[] str = ScratchAllocCopySlice!(u8)(text, start, len);
+				u8[] str = ScratchAlloc!(u8)(text, start, len);
 
 				TS[] stl = [];
 				if(style.length > 0)
 				{
-					stl = ScratchAllocCopySlice!(TS)(style, start, len);
+					stl = ScratchAlloc!(TS)(style, start, len);
 				}
 
 				Node!(TextBuffer)* n = node;
diff --git a/src/editor/widgets.d b/src/editor/widgets.d
index ffbb03b..7be2221 100644
--- a/src/editor/widgets.d
+++ b/src/editor/widgets.d
@@ -77,7 +77,7 @@ struct UIPanel
 	i64       start_row;
 	i64       end_row;
 
-	Vec2      pos;
+	Rect      rect;
 	Vec2      size;
 }
 
@@ -153,19 +153,21 @@ SetPanelSizes(UIPanel* panel)
 {
 	UICtx* ctx   = GetCtx();
 
-	panel.size.x = ctx.res.x;
-	panel.size.y = ctx.res.y;
-	panel.pos    = 0.0;
+	panel.size.x    = ctx.res.x;
+	panel.size.y    = ctx.res.y;
+	panel.rect.vec0 = 0.0;
+	panel.rect.vec1 = 0.0;
 
 	static foreach(axis; A2D.min .. A2D.max)
 	{
 		for(UIPanel* p = panel; !Nil(p); p = Recurse(p))
 		{
-			f32 pos = p.pos.v[axis];
+			f32 pos = p.rect.vec0.v[axis];
 			for(UIPanel* c = p.first; !Nil(c); c = c.next)
 			{
-				c.pos.v[axis]  = pos;
-				c.size.v[axis] = p.axis == axis ? c.pct * p.size.v[axis] : p.size.v[axis]; 
+				c.size.v[axis]      = p.axis == axis ? c.pct * p.size.v[axis] : p.size.v[axis]; 
+				c.rect.vec0.v[axis] = pos;
+				c.rect.vec1.v[axis] = pos + c.size.v[axis];
 
 				if(axis == p.axis)
 				{
@@ -197,79 +199,64 @@ Panel2(UIPanel* panel)
 	UIPanel* parent = panel.parent;
 	UIPanel* prev   = panel.prev;
 
-	Vec2 click_adjust = Vec2(
+	Axis2D pax = parent.axis;
+
+	Vec2 adj = Vec2(
 		parent.axis == A2D.X ? 10 : 0,
 		parent.axis == A2D.Y ? 10 : 0
 	);
 
-	if(!Nil(prev))
+	Vec2 p0 = panel.rect.vec0-adj;
+	Vec2 p1 = panel.rect.vec1+adj;
+
+	if(!Nil(prev)) with(panel)
 	{
-		Vec2 p0 = panel.pos-click_adjust;
-		Vec2 p1 = panel.pos+panel.size+click_adjust;
-
-		if(Dragged(item, p0, p1))
+		if(Dragged(item, p0, p1) && item.dragged.v[pax] != 0.0)
 		{
-			A2D axis = parent.axis;
-			f32 p_start = parent.pos.v[axis];
-			f32 p_end   = p_start + parent.size.v[axis];
-			f32 drag    = item.dragged.v[axis];
-
-			if(drag != 0.0)
+			f32 mov_pct = Remap(item.dragged.v[pax], 0.0, size.v[pax], 0.0, 1.0);
+			if(CheckPanelBounds(pct + mov_pct) && CheckPanelBounds(panel.prev.pct - mov_pct))
 			{
-				f32 pct = Remap(drag, 0.0, p_start-p_end, 0.0, 1.0);
-				if(CheckPanelBounds(panel.pct - pct) && CheckPanelBounds(panel.prev.pct + pct))
-				{
-					panel.pct      -= pct;
-					panel.prev.pct += pct;
-				}
+				pct            += mov_pct;
+				panel.prev.pct -= mov_pct;
 			}
 		}
 	}
 
 	if(panel.ed != null)
 	{
-		if(Clicked(item, panel.pos, panel.pos+panel.size-click_adjust))
+		if(Clicked(item, p0, p1))
 		{
 			SetFocusedPanel(panel);
 		}
 
-		DrawBorderedRect(panel.pos, panel.size, 2.0, 2.0, 0.1, DEFAULT_COL, focused ? HL_BORDER_COL : DEFAULT_BORDER_COL);
+		DrawBorderedRect(panel.rect.vec0, panel.size, 2.0, 2.0, 0.1, DEFAULT_COL, focused ? HL_BORDER_COL : DEFAULT_BORDER_COL);
 
 		i64 rows = cast(i64)ceil(panel.size.y/TEXT_SIZE);
 
 		GetLines(&ed.buf, &ed.linebufs, rows);
 
-		i64 offset = ed.buf.offset;
-		i64 end    = offset + ed.linebufs.count;
-
 		char[64] ch_buf = '\0';
-		char[]   fmt = ch_buf.sformat("%%0%ss", u64(end.toChars().length));
+		char[]   fmt = ch_buf.sformat("%%0%ss", u64(ed.linebufs.end.toChars().length));
 
-		u8[] end_line_text = ScratchAlloc!(u8)(end.toChars().length);
-		end_line_text[] = '0';
+		u8[] end_line_text = ScratchAlloc!(u8)(ed.linebufs.end.toChars().length, '0');
 
 		f32 lcw = CalcTextWidth(end_line_text);
 		f32 padding = 4.0;
 
-		DrawRect(panel.pos, panel.pos+Vec2(lcw+padding*2, panel.size.y), 0.0, 0.0, focused ? LC_HL_COLOR : LC_COLOR);
+		DrawRect(panel.rect.vec0, panel.rect.vec1+Vec2(lcw+padding*2, panel.size.y), 0.0, 0.0, focused ? LC_HL_COLOR : LC_COLOR);
 
-		f32 x = panel.pos.x;
-		f32 y = panel.pos.y + TEXT_SIZE;
+		f32 x = panel.rect.x0;
+		f32 y = panel.rect.y0 + TEXT_SIZE;
 
-		auto atlas = &ctx.atlas_buf.atlas;
+		FontAtlas* atlas = &ctx.atlas_buf.atlas;
 		bool edit = EditModeActive();
 		U64Vec2 pos = VecPos(&ed.buf);
 		u64 i;
 		for(auto buf = ed.linebufs.first; buf != null; buf = buf.next, i += 1)
 		{
 			f32 x_pos = x + padding;
-			char[32] line_buf = '\0';
-			char[] line_str = sformat(line_buf, fmt, offset+i);
 
-			foreach(j; 0 .. line_str.length)
-			{
-				DrawChar(&ctx.atlas_buf.atlas, line_str[j], &x_pos, y, Vec4(1.0));
-			}
+			DrawLineCount(atlas, fmt, &x_pos, y, ed.linebufs.start+i);
 
 			x_pos += padding;
 
@@ -281,27 +268,13 @@ Panel2(UIPanel* panel)
 
 				if(pos.y == i)
 				{
-					f32 hl_x = x + lcw + padding*2.0;
-					Glyph* g = GetGlyph(' ');
-					foreach(j; 0 .. l.text.length)
-					{
-						bool hl = j == pos.x-ch_offset;
-						if(hl)
-						{
-							break;
-						}
-
-						g = j == l.text.length-1 ? GetGlyph(' ') : GetGlyph(l.text[j]);
-						hl_x += GlyphWidth(g);
-					}
-
-					DrawRect(hl_x, y, atlas, cast(u8)g.ch, Vec4(1.0), edit);
+					DrawCursor(atlas, l.text, pos.x, x+lcw+padding*2.0, y, ch_offset, edit);
 				}
 
 				foreach(j; 0 .. l.text.length)
 				{
 					bool hl = pos.y == i && !edit && j == pos.x-ch_offset;
-					DrawChar(&ctx.atlas_buf.atlas, l.text[j], &x_pos, y, hl ? Vec4(Vec3(0.0), 1.0) : SYNTAX_COLORS[l.style[j]]);
+					DrawChar(atlas, l.text[j], &x_pos, y, hl ? Vec4(Vec3(0.0), 1.0) : SYNTAX_COLORS[l.style[j]]);
 				}
 
 				y += TEXT_SIZE;
@@ -312,6 +285,37 @@ Panel2(UIPanel* panel)
 	}
 }
 
+pragma(inline) void
+DrawCursor(FontAtlas* atlas, u8[] text, u64 ch_x, f32 x, f32 y, u64 offset, bool edit)
+{
+	Glyph* g = GetGlyph(' ');
+	foreach(j; 0 .. text.length)
+	{
+		bool hl = j == ch_x-offset;
+		if(hl)
+		{
+			break;
+		}
+
+		g = j == text.length-1 ? GetGlyph(' ') : GetGlyph(text[j]);
+		x += GlyphWidth(g);
+	}
+
+	DrawRect(x, y, atlas, cast(u8)g.ch, Vec4(1.0), edit);
+}
+
+pragma(inline) void
+DrawLineCount(FontAtlas* atlas, char[] fmt, f32* x_pos, f32 y, u64 line)
+{
+	char[32] line_buf = '\0';
+	char[] line_str = sformat(line_buf, fmt, line);
+
+	foreach(j; 0 .. line_str.length)
+	{
+		DrawChar(atlas, line_str[j], x_pos, y, Vec4(1.0));
+	}
+}
+
 f32
 LineCounter2(UIPanel* panel, i64 start_row, i64 end_row)
 {
@@ -338,14 +342,13 @@ LineCounter2(UIPanel* panel, i64 start_row, i64 end_row)
 			sprintf(cast(char*)line_counts[i].ptr, fmt.ptr, start_row+i);
 		}
 
-		max_line_text = ScratchAlloc!(u8)(width);
-		max_line_text[] = cast(u8)'0';
+		max_line_text = ScratchAlloc!(u8)(width, '0');
 	}
 
 	lc_width = CalcTextWidth(max_line_text) + padding*2.0;
 
-	f32 x = panel.pos.x + padding;
-	f32 y = panel.pos.y + TEXT_SIZE;
+	f32 x = panel.rect.x0 + padding;
+	f32 y = panel.rect.y0 + TEXT_SIZE;
 
 	foreach(i; 0 .. line_counts.length)
 	{