Hello,
** Mosè Giordano [2014-08-12 12:59:38 +0200]:

> Hi Vladimir,

> 2014-08-12 12:42 GMT+02:00 Vladimir Lomov <[email protected]>:
>> Hello,
>> ** Tassilo Horn [2014-08-12 12:27:57 +0200]:

>>> Mosč Giordano <[email protected]> writes:

>>>>>   2. Wrt. 1, what if I want labels in a paragraph environment but not
>>>>>   for a \paragraph{} section?

>>>> I believe you can't define an environment with the same name of an
>>>> existing macro and vice versa, so there should never be a naming clash
>>>> :-)

>>> Oh, indeed!

>> Sectioning commands (standard ones) are expections. See attached
>> example. So, in general in LaTeX it is possible to define macros and
>> environments with the same name.

> Thanks for sharing this, I didn't know!  But this applies only to
> these sectioning commands, right?  An environment defined with
> `\newenvironment' does clash with an existing macro with the same
> name.

I'm not sure and wouldn't give definite answer right now. Some time ago
I investigated this interesting possibility (to have a macro and
environment with the same name, this is useful especial for HTML export,
because environments are like tags in HTML), but don't remember the
details. The only thing I wanted to say was the statement

> I believe you can't define an environment with the same name of an
> existing macro and vice versa, so there should never be a naming clash
> :-)

is wrong, standard LaTeX (and not only standard one) classes defines
some macros such that they have corresponding environment. See other two
attached examples.

> Anyway, I hope there won't be many people wanting to label `\section'
> but not the `section' environment ;-)

Yes, exactly. Of course there are macros (and corresponding
environments) that can have labels, but it would be nice to not restrict
youself to only macros or environments, both can have labels.

> Bye,
> Mosè

---
WBR, Vladimir Lomov

-- 
Four be the things I am wiser to know:
Idleness, sorrow, a friend, and a foe.

Four be the things I'd been better without:
Love, curiosity, freckles, and doubt.

Three be the things I shall never attain:
Envy, content, and sufficient champagne.

Three be the things I shall have till I die:
Laughter and hope and a sock in the eye.
                -- Dorothy Parker, "Inventory" [or "Not so Deep as a Well"?]
\documentclass{article}

\begin{document}

\section{First numbered section}

Hello, World!

This is \textbf{extremly} interesting.

\begin{section}{Second numbered section}
And again, hello, World!

\begin{bfseries}
This whole paragraph will be typeset in bold.
\end{bfseries}

{\bfseries As well as this one.\par}

\end{section}

\end{document}
\documentclass{scrartcl}

\begin{document}

\section{First numbered section}

Hello, World!

This is \textbf{extremly} interesting.

\begin{section}{Second numbered section}
And again, hello, World!

\begin{bfseries}
This whole paragraph will be typeset in bold.
\end{bfseries}

{\bfseries As well as this one.\par}

\end{section}

\end{document}
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