From 2362801d66ffc1e37b90e9c70c5bee849e7a70fb Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fischer@muhq.space>
Date: Sun, 7 May 2023 16:59:37 +0200
Subject: update common latex code

use more tikz libraries and add new helper math command
---
 latex/common.tex          | 3 +++
 latex/common_packages.tex | 2 ++
 latex/test.cls            | 1 -
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/latex/common.tex b/latex/common.tex
index aa910764..d71a2492 100644
--- a/latex/common.tex
+++ b/latex/common.tex
@@ -23,3 +23,6 @@
 \newcommand{\solution}[1]{\iftoggle{lehrerversion}{#1}{\phantom{#1}}}
 
 \newcommand{\gap}[1]{\underline{\solution{#1}}}
+
+% Add new paired delimiter 'abs' using mathtools
+\DeclarePairedDelimiter\abs{\lvert}{\rvert}%
diff --git a/latex/common_packages.tex b/latex/common_packages.tex
index 6320df4f..c32f140c 100644
--- a/latex/common_packages.tex
+++ b/latex/common_packages.tex
@@ -1,10 +1,12 @@
 \RequirePackage{geometry}
 \RequirePackage[utf8]{inputenc}
 \RequirePackage{amssymb,amsthm,amsmath}
+\RequirePackage{mathtools}
 \RequirePackage{ifthen}
 \RequirePackage{graphicx}
 \RequirePackage[table]{xcolor}
 \RequirePackage{tikz}
+\usetikzlibrary{calc,tikzmark,backgrounds,arrows.meta}
 \RequirePackage{multicol}
 \RequirePackage[most]{tcolorbox}
 \RequirePackage{lmodern}
diff --git a/latex/test.cls b/latex/test.cls
index d58765dc..fa8ea0e1 100644
--- a/latex/test.cls
+++ b/latex/test.cls
@@ -29,7 +29,6 @@
 
 \RequirePackage{everypage}
 \RequirePackage{tikzpagenodes}
-\usetikzlibrary{backgrounds}
 
 \iftoggle{drawborder}{
   \AddEverypageHook{
-- 
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