Tanvir Hussain

Add the path of TeXLive 2020 to your .bashrc and .profile. In .bashrc add the following lines (considering the texlive is installed in root) PATH=/usr/local/texlive/2020/bin/x86_64-linux:$PATH; export PATH In ~/.profile add the following lines at the end (make sure to check the path of texlive installation; I have installed texlive in root - so the path starts with /usr/local/) PATH=/usr/local/texlive/2020/bin/x86_64-linux:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games...

I am using Kile version 2.9.93 on Ubuntu 20.04 LTS. I could compile TeX documents using Kile. No issues with it. In the KILE editor, I do not understand why one of the environment (vmatrix or pmatrix) is highlighted (in red) where all of my enviroments are in blue. This makes the subsequent texts inside the environment (which is math environment) look like simple text. Although this does not affect the outcome, but I want to understand why it gets highlighted in such a way. A screenshot of the editor...