diff --git a/Documents/BT/BT/chap01_existing_technologies.tex b/Documents/BT/BT/chap01_existing_technologies.tex
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--- a/Documents/BT/BT/chap01_existing_technologies.tex
+++ b/Documents/BT/BT/chap01_existing_technologies.tex
@@ -203,7 +203,7 @@ A better imagination, how the app is situated on the client-side, can be represe
 \label{img01:wasm}
 \end{figure}
 
-Technical details of interop with a browser are one part of the Blazor App.
+The interop with a browser are one part of the Blazor App.
 The main part is the architecture of the libraries.
 A common approach how to create a page is using the markup language Razor.
 There already exists Razor in standard ASP.NET website where .cshtml extensions consist of this markup.
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