bug#38716: Document adjusting text scale emacs-wide

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: 積丹尼 Dan Jacobson
>>  <jidanni@jidanni.org>
>> Date: Mon, 23 Dec 2019 11:27:24 +0800
>> 
>> (info "(emacs) Text Scale") only mentions the current buffer.
>> Mention there what if the user wants to make the text bigger emacs-wide,
>> instead of needing to repeat the command in each buffer.
>> 
>> Or mention that this is just not possible, and the best the user can do
>> is ... etc.
>
> We don't mention in the manual features we don't have.

So I'm closing this bug report.

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