Demo: Spacing.
diff --git a/imgui_demo.cpp b/imgui_demo.cpp
index 08f924f..9bee50a 100644
--- a/imgui_demo.cpp
+++ b/imgui_demo.cpp
@@ -3222,19 +3222,19 @@
     struct CustomConstraints // Helper functions to demonstrate programmatic constraints
     {
         static void Square(ImGuiSizeCallbackData* data) { data->DesiredSize = ImVec2(IM_MAX(data->DesiredSize.x, data->DesiredSize.y), IM_MAX(data->DesiredSize.x, data->DesiredSize.y)); }
-        static void Step(ImGuiSizeCallbackData* data) { float step = (float)(int)(intptr_t)data->UserData; data->DesiredSize = ImVec2((int)(data->DesiredSize.x / step + 0.5f) * step, (int)(data->DesiredSize.y / step + 0.5f) * step); }
+        static void Step(ImGuiSizeCallbackData* data)   { float step = (float)(int)(intptr_t)data->UserData; data->DesiredSize = ImVec2((int)(data->DesiredSize.x / step + 0.5f) * step, (int)(data->DesiredSize.y / step + 0.5f) * step); }
     };
 
     static bool auto_resize = false;
     static int type = 0;
     static int display_lines = 10;
-    if (type == 0) ImGui::SetNextWindowSizeConstraints(ImVec2(-1, 0), ImVec2(-1, FLT_MAX));      // Vertical only
-    if (type == 1) ImGui::SetNextWindowSizeConstraints(ImVec2(0, -1), ImVec2(FLT_MAX, -1));      // Horizontal only
+    if (type == 0) ImGui::SetNextWindowSizeConstraints(ImVec2(-1, 0),    ImVec2(-1, FLT_MAX));      // Vertical only
+    if (type == 1) ImGui::SetNextWindowSizeConstraints(ImVec2(0, -1),    ImVec2(FLT_MAX, -1));      // Horizontal only
     if (type == 2) ImGui::SetNextWindowSizeConstraints(ImVec2(100, 100), ImVec2(FLT_MAX, FLT_MAX)); // Width > 100, Height > 100
-    if (type == 3) ImGui::SetNextWindowSizeConstraints(ImVec2(400, -1), ImVec2(500, -1));          // Width 400-500
-    if (type == 4) ImGui::SetNextWindowSizeConstraints(ImVec2(-1, 400), ImVec2(-1, 500));          // Height 400-500
-    if (type == 5) ImGui::SetNextWindowSizeConstraints(ImVec2(0, 0), ImVec2(FLT_MAX, FLT_MAX), CustomConstraints::Square);          // Always Square
-    if (type == 6) ImGui::SetNextWindowSizeConstraints(ImVec2(0, 0), ImVec2(FLT_MAX, FLT_MAX), CustomConstraints::Step, (void*)100);// Fixed Step
+    if (type == 3) ImGui::SetNextWindowSizeConstraints(ImVec2(400, -1),  ImVec2(500, -1));          // Width 400-500
+    if (type == 4) ImGui::SetNextWindowSizeConstraints(ImVec2(-1, 400),  ImVec2(-1, 500));          // Height 400-500
+    if (type == 5) ImGui::SetNextWindowSizeConstraints(ImVec2(0, 0),     ImVec2(FLT_MAX, FLT_MAX), CustomConstraints::Square);          // Always Square
+    if (type == 6) ImGui::SetNextWindowSizeConstraints(ImVec2(0, 0),     ImVec2(FLT_MAX, FLT_MAX), CustomConstraints::Step, (void*)100);// Fixed Step
 
     ImGuiWindowFlags flags = auto_resize ? ImGuiWindowFlags_AlwaysAutoResize : 0;
     if (ImGui::Begin("Example: Constrained Resize", p_open, flags))
@@ -3287,10 +3287,10 @@
             ImGui::Text("Mouse Position: <invalid>");
         if (ImGui::BeginPopupContextWindow())
         {
-            if (ImGui::MenuItem("Custom", NULL, corner == -1)) corner = -1;
-            if (ImGui::MenuItem("Top-left", NULL, corner == 0)) corner = 0;
-            if (ImGui::MenuItem("Top-right", NULL, corner == 1)) corner = 1;
-            if (ImGui::MenuItem("Bottom-left", NULL, corner == 2)) corner = 2;
+            if (ImGui::MenuItem("Custom",       NULL, corner == -1)) corner = -1;
+            if (ImGui::MenuItem("Top-left",     NULL, corner == 0)) corner = 0;
+            if (ImGui::MenuItem("Top-right",    NULL, corner == 1)) corner = 1;
+            if (ImGui::MenuItem("Bottom-left",  NULL, corner == 2)) corner = 2;
             if (ImGui::MenuItem("Bottom-right", NULL, corner == 3)) corner = 3;
             if (p_open && ImGui::MenuItem("Close")) *p_open = false;
             ImGui::EndPopup();
@@ -3370,8 +3370,8 @@
             draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, 10.0f, ImDrawCornerFlags_All, curr_thickness); x += sz + spacing;
             draw_list->AddRect(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, 10.0f, ImDrawCornerFlags_TopLeft | ImDrawCornerFlags_BotRight, curr_thickness); x += sz + spacing;
             draw_list->AddTriangle(ImVec2(x + sz*0.5f, y), ImVec2(x + sz, y + sz - 0.5f), ImVec2(x, y + sz - 0.5f), col32, curr_thickness); x += sz + spacing;
-            draw_list->AddLine(ImVec2(x, y), ImVec2(x + sz, y), col32, curr_thickness); x += sz + spacing; // Horizontal line (note: drawing a filled rectangle will be faster!)
-            draw_list->AddLine(ImVec2(x, y), ImVec2(x, y + sz), col32, curr_thickness); x += spacing;    // Vertical line (note: drawing a filled rectangle will be faster!)
+            draw_list->AddLine(ImVec2(x, y), ImVec2(x + sz, y), col32, curr_thickness); x += sz + spacing;      // Horizontal line (note: drawing a filled rectangle will be faster!)
+            draw_list->AddLine(ImVec2(x, y), ImVec2(x, y + sz), col32, curr_thickness); x += spacing;           // Vertical line (note: drawing a filled rectangle will be faster!)
             draw_list->AddLine(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, curr_thickness); x += sz + spacing; // Diagonal line
             draw_list->AddBezierCurve(ImVec2(x, y), ImVec2(x + sz*1.3f, y + sz*0.3f), ImVec2(x + sz - sz*1.3f, y + sz - sz*0.3f), ImVec2(x + sz, y + sz), col32, curr_thickness);
             x = p.x + 4;
@@ -3382,8 +3382,8 @@
         draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, 10.0f); x += sz + spacing;
         draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + sz), col32, 10.0f, ImDrawCornerFlags_TopLeft | ImDrawCornerFlags_BotRight); x += sz + spacing;
         draw_list->AddTriangleFilled(ImVec2(x + sz*0.5f, y), ImVec2(x + sz, y + sz - 0.5f), ImVec2(x, y + sz - 0.5f), col32); x += sz + spacing;
-        draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + thickness), col32); x += sz + spacing;          // Horizontal line (faster than AddLine, but only handle integer thickness)
-        draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + thickness, y + sz), col32); x += spacing + spacing;     // Vertical line (faster than AddLine, but only handle integer thickness)
+        draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + thickness), col32); x += sz + spacing;        // Horizontal line (faster than AddLine, but only handle integer thickness)
+        draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + thickness, y + sz), col32); x += spacing + spacing;   // Vertical line (faster than AddLine, but only handle integer thickness)
         draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + 1, y + 1), col32);          x += sz;                  // Pixel (faster than AddLine)
         draw_list->AddRectFilledMultiColor(ImVec2(x, y), ImVec2(x + sz, y + sz), IM_COL32(0, 0, 0, 255), IM_COL32(255, 0, 0, 255), IM_COL32(255, 255, 0, 255), IM_COL32(0, 255, 0, 255));
         ImGui::Dummy(ImVec2((sz + spacing) * 8, (sz + spacing) * 3));