This is version 2.2, last revised 1997/12/20; documentation date 2005/04/09.

**
Author: F. Bosisio
E-mail:
fbosisio@bigfoot.com
CTAN location:
macros/latex/contrib/bosisio
**

Documentation for the package `mathcmd`.

In particular the ```\d`'' command is
redefined, so care should be taken, expecially when including this package
in an already existent LaTeX file.

The original work of ```\d`'' (i.e. place a dot under its argument)
is now done by the ```\UnderDot`'' command.

At now, six options are available with the `mathcmd` package, which
comes out in matched pairs.

The ```ThreeSubscrSum`'' and ```TwoSubscrSum`'' options control
the placement of subscripts for
the ```\Sum`'' command: the latter
(which is the default) puts the index under the simbol toghether with the
starting point, while the former puts the index on the lower right corner.

The ```ProdVettWedge`'' and ```ProdVettTimes`'' options
select which symbol is to be used for the
*vector product*: the first one uses
a ```\wedge`'' (default), whilst the second uses a ```\times`".

Finally, the ```VectOpStr`'' and ```VectOpSymb`'' options
controls whether the vector-operator commands
```\Grad`'', ```\Div`'' and ```\Rot`'' should produce
a roman string (default) or a ```\nabla`" symbol followed by an
operator, respectively.

The `mathcmd` package defines a number of math-mode commands.

The ```\text...`'' command is defined to be equivalent to
```\mbox`'' (except when the ```amstext`" package is also used,
since this package already defines this command in a better way).

It is intended for inserting pieces of text in a formula.

The ```\Int`'' (capitalized) differs from the LaTeX command
```\int`'' in that it is always printed in `displaystyle` and
if it has only a subscript, this is somewhat lowered so that it looks better.

\Int_{...}^{...} ... \d{...}

The ```\d...`'' command is for making the
differential symbol at the end of integrals: it simply prints a ```d`''
followed by its argument and preceded by a little space, which seems prettier.

The ```\Sum{...=...,...}`'' command works differently, depending on
which option between ```TwoSubscrSum`''
(default) and ```ThreeSubscrSum`'' has been
specified.

In the first case, it expands to
```\displaystyle\sum_{...}={...}^{...}`'', whereas in the second
case the second and third argument are treated in the same way as before
(i.e. as a subscript and superscript, respectively), but the first argument
(the one before the ``='') is placed near the lower-left edge of the
```\sum`'' symbol and the ``='' is not printed.

There is also a ```\SUM...`'' command which is useful when only a
subscript is desired, irrespectively of the option specified: in fact, it
is equivalent to ```\displaystyle\sum_...`".

The commands ```\DerTot{...}{...}`'', ```\DerPar{...}{...}`'' and
```\DerNorm{...}`'' generate the symbols of total derivative, partial
derivative and normal derivative, respectively.

In other words, they are the same as:

\displaystyle\frac{d...}{d...} \displaystyle\frac{\partial ...}{\partial ...} \displaystyle\frac{\partial ...}{\partial n}

The command ```\TendsTo[...,...]`'' generates a right-arrow with
optionally an underscript wich is another smaller right-arrow between the
two comma-separeted arguments inside the square brackets.

For example, the command ```f(x) \TendsTo[x,0] 1`'' generates
the following output:

f(x) ----------> 1 x --> 0

Finally, the commands ```\Grad`'', ```\Div`'' and
```\Rot`'' generates the strings ``grad'', ``div'' and ``rot''
in roman type and with small spaces added before and after, if the
``VectOpStr'' option is in effect (default).
If, instead, the option ``VectOpSymb'' was specified,
they generate ```\nabla`", ```\nabla\cdot`'' and
```\nabla\ProdVett`'' respectively.

The command ```\ProdVett`'' is intended for making the symbol of
vector product, and evaluates to ```\times`'' with the option
``ProdVettTimes'' and to ```\wedge`''
with the (default) option ``ProdVettWedge''.

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