diff --git a/os/linux/nixos/docs/presentations.txt b/os/linux/nixos/docs/presentations.txt
index 65e3a576c..22a845d4a 100644
--- a/os/linux/nixos/docs/presentations.txt
+++ b/os/linux/nixos/docs/presentations.txt
@@ -1,4 +1,6 @@
 2023
+Nixos - Valentin Gagarin - Theophane Hufschmitt & Matthias Meschede – Build system for business (2023 Nix Developer Dialogues) of 1:02:27
+    https://www.youtube.com/watch?v=g_6vi14aD0c
 MoscowProgrammingClub - Nix - Not Only PM 0:00 of 1:49:05
     https://www.youtube.com/watch?v=0Lhahzs-Wos
 Nixos - Valentin Gagarin - Silvan Mosberger – Paving roads through the jungle (2023 Nix Developer Dialogues) of 1:00:36
diff --git a/pl/web/browsers/firefox/ext/devtools.txt b/pl/web/browsers/firefox/ext/devtools.txt
index e9a163bf8..f373d1fe0 100644
--- a/pl/web/browsers/firefox/ext/devtools.txt
+++ b/pl/web/browsers/firefox/ext/devtools.txt
@@ -1,5 +1,12 @@
 https://developer.mozilla.org/en-US/docs/Tools/Page_Inspector/How_to/Examine_Flexbox_layouts
 
+fond size
+about:config
+devtools.toolbox.zoomValue 
+    set more than 1
+or just use C-+
+
+
 2021
 https://mozilladevelopers.github.io/playground/debugger/04-conditional-breakpoints/
     https://habr.com/ru/post/592095/