diff --git a/articles/Gamma correction - Wikipedia/Gamma correction - Wikipedia.pdf.txt b/articles/Gamma correction - Wikipedia/Gamma correction - Wikipedia.pdf.txt
new file mode 100644
index 0000000..b5354f3
--- /dev/null
+++ b/articles/Gamma correction - Wikipedia/Gamma correction - Wikipedia.pdf.txt	
@@ -0,0 +1 @@
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diff --git a/articles/Gamma correction - Wikipedia/Gamma correction - Wikipedia.xopp.xml b/articles/Gamma correction - Wikipedia/Gamma correction - Wikipedia.xopp.xml
new file mode 100644
index 0000000..94ee0fc
--- /dev/null
+++ b/articles/Gamma correction - Wikipedia/Gamma correction - Wikipedia.xopp.xml	
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