When you use WordPress, you may find that
are inserted into your posts without your permission. This is a side effect of the auto-formatting feature, but it can be fatal for sites that need to display strings strictly, like the QuizGenerator site.
So, I used a plugin called "PS Disable Auto Formatting" to disable the auto formatting function of Wordpress, but when I use this plugin in combination with recent Wordpress, I can't switch between visual mode and text mode. I can't switch between visual mode and text mode.
It is also possible to put the following code in the functions.php of the theme file, but it is troublesome to modify the file every time the theme file is updated. So, I created an original plugin.
remove_filter( 'the_content', 'wpautop' );