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[Orgmode] Re: org-entities-user
From: |
Ulf Stegemann |
Subject: |
[Orgmode] Re: org-entities-user |
Date: |
Thu, 20 May 2010 08:40:18 +0200 |
User-agent: |
Gnus/5.110011 (No Gnus v0.11) Emacs/24.0.50 (gnu/linux) |
Dear Nathaniel,
Nathaniel Flath <address@hidden> wrote:
> I've been setting up org-entities-user with a few custom symbols, and
> managed to get a few aliases for items already in org-entities, but i'm a
> bit stuck on adding new items - specifically, the mathbb versions of Z and R
> (the symbols for the sets of integers and reals). I can't seem to find the
> UTF-8, latin-1, or HTML encodings of these entities - and I'm not sure how
> to input the utf-8 or latin-1 even if I do. Does anyone know how to do
> this?
there's nothing like a blackboard or double-struck R and Z in latin-1
(and ASCII) so you will need to live with a transcription like `R' or
`REALS' &c.
In unicode these characters are called `double-struck capital r' and
`double-struck capital z' and they have the hex values 211d and 2124
respectively. In Emacs you can enter them with `C-x 8 RET 211d RET' or
`C-x 8 RET double-struck capital r RET'.
The corresponding XML (XHTML) entities are `ℝ' or `ℝ' and
`ℤ' or `ℤ' respectively. However, at least latest firefox
does not know how to render these and outputs these entities literally so
you might prefer to go for a transcription as well or use a unicode page
encoding with the appropriate unicode characters.
In case you are interested in further blackboard characters, w3c has a
nice page about double-struck entities. Find it at
http://www.w3.org/TR/xml-entity-names/double-struck.html.
HTH,
Ulf