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deleted file mode 100644
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--- a/gl2.1/bottom.php
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diff --git a/gl2.1/index.php b/gl2.1/index.php
index 96a9dfde..419857b5 100644
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@@ -1,9 +1,9 @@
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-OpenGL 2.1 Reference Pages
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+OpenGL 2.1 Reference Pages
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diff --git a/gl2.1/top.php b/gl2.1/top.php
deleted file mode 100644
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-OpenGL SDK
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diff --git a/gl4/bottom.php b/gl4/bottom.php
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diff --git a/gl4/index.php b/gl4/index.php
index 06de51c1..28062af2 100644
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@@ -2,8 +2,8 @@
OpenGL 4 Reference Pages
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