Comments, tweaks

README.md

@@ -119,7 +119,7 @@ ImGui is very programmer centric and the immediate-mode GUI paradigm might requi
 
 <b>Is ImGui fast?</b>
 
-Probably fast enough for most uses. Down to the fundation of its visual design, ImGui is engineered to be fairly performant both in term of CPU and GPU usage. Running elaborate code and creating elaborate UI will of course have a cost but ImGui aims to minimize it.
+Probably fast enough for most uses. Down to the foundation of its visual design, ImGui is engineered to be fairly performant both in term of CPU and GPU usage. Running elaborate code and creating elaborate UI will of course have a cost but ImGui aims to minimize it.
 
 Mileage may vary but the following screenshot can give you a rough idea of the cost of running and rendering UI code (In the case of a trivial demo application like this one, your driver/os setup are likely to be the bottleneck. Testing performance as part of a real application is recommended).
 

imgui.cpp

@@ -610,7 +610,6 @@
 #include "imgui_internal.h"
 
 #include <ctype.h>      // toupper, isprint
-#include <math.h>       // sqrtf, fabsf, fmodf, powf, cosf, sinf, floorf, ceilf
 #include <stdlib.h>     // NULL, malloc, free, qsort, atoi
 #include <stdio.h>      // vsnprintf, sscanf, printf
 #include <limits.h>     // INT_MIN, INT_MAX
@@ -9129,10 +9128,10 @@ void ImGui::EndGroup()
 }
 
 // Gets back to previous line and continue with horizontal layout
-//      pos_x == 0      : follow on previous item
-//      pos_x != 0      : align to specified column
-//      spacing_w < 0   : use default spacing if column_x==0, no spacing if column_x!=0
-//      spacing_w >= 0  : enforce spacing
+//      pos_x == 0      : follow right after previous item
+//      pos_x != 0      : align to specified x position
+//      spacing_w < 0   : use default spacing if pos_x == 0, no spacing if pos_x != 0
+//      spacing_w >= 0  : enforce spacing amount
 void ImGui::SameLine(float pos_x, float spacing_w)
 {
     ImGuiWindow* window = GetCurrentWindow();

imgui_demo.cpp

@@ -11,7 +11,7 @@
 
 #include "imgui.h"
 #include <ctype.h>          // toupper, isprint
-#include <math.h>           // sqrtf, fabsf, fmodf, powf, cosf, sinf, floorf, ceilf
+#include <math.h>           // sqrtf, powf, cosf, sinf, floorf, ceilf
 #include <stdio.h>          // vsnprintf, sscanf, printf
 #include <stdlib.h>         // NULL, malloc, free, qsort, atoi
 #if defined(_MSC_VER) && _MSC_VER <= 1500 // MSVC 2008 or earlier

imgui_internal.h

@@ -12,7 +12,7 @@
 #endif
 
 #include <stdio.h>      // FILE*
-#include <math.h>       // sqrtf()
+#include <math.h>       // sqrtf, fabsf, fmodf, powf, floorf, ceilf, cosf, sinf
 
 #ifdef _MSC_VER
 #pragma warning (push)