Subject: Re: bug#67449: Manual: add how to change default global font size in .emacs

From: Eli Zaretskii <[email-masked]>
Date: Sun, 26 Nov 2023 15:50:12 +0200

> Date: Sun, 26 Nov 2023 21:28:31 +0800
> From: Dan Jacobson <[email-masked]>
> Cc: [email-masked]
> 
> OK, so if "emacs' default font size is 10",
> there is no way to make it e.g., 15.

Yes, there is: see the manual, in the same node where you found the
description of the default.  There are 5 different ways of doing this
described there, two of them are suitable for customizing the font
Emacs will use as the default one, and recording that customization
once and for all.