diff --git a/articles/Learn Quantum Efficiency Teledyne Princeton Instruments/Learn Quantum Efficiency Teledyne Princeton Instruments.xopp.xml b/articles/Learn Quantum Efficiency Teledyne Princeton Instruments/Learn Quantum Efficiency Teledyne Princeton Instruments.xopp.xml
index 28117bf..23c23a4 100644
--- a/articles/Learn Quantum Efficiency Teledyne Princeton Instruments/Learn Quantum Efficiency Teledyne Princeton Instruments.xopp.xml
+++ b/articles/Learn Quantum Efficiency Teledyne Princeton Instruments/Learn Quantum Efficiency Teledyne Princeton Instruments.xopp.xml
@@ -3,11 +3,36 @@
Xournal++ document - see https://github.com/xournalpp/xournalpp
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