Custom Font in DocType and Report

Hi,

How can I use a custom font in a DocType and/or Report.

BR/Mijan

Not possible without changing source code files. font-family is set in the file common.less

I want to add Barcode Fonts and also add the same font under Font Options under print format.
Can you guide or have some sample code.

BR/Mijan

This is the css file which is used as a styling for print formats.