Document how to undo typography transforms while typing

Is your feature request related to a problem? Please describe.
It seems, there are some automatic replacements in place.

Examples:

When you 4x3 then the x will be replace with a multiply sign ×, so the result will be 4×3.

When entering "Text" the quotes will get replaced depending on the language and it may become “Text”.

However I in some cases it is important to keep the text exactly as it was entered.

Describe the solution you'd like
There is either a global configuration in config/config.php to disable this kind of formatting or an option to disable it in the text editor when needed.

Describe alternatives you've considered
Removing the formatting completely and add an additional menu to enter special characters from a drop down list, when needed. This would also allow to enter characters which can not be found on keyboards like mathematical symbols etc..

Start by locating the text editor's automatic typography replacements and any existing configuration or editor-option entry points. Compare the requested global setting with a per-editor option, then define which behavior should be disabled and verify that literal input such as 4x3 and quoted text remains unchanged.