an both be omitted, giving a default of 1
for the index and 1xn for the size.
</p>
<p>
</p>
<p>
</p>
<p>
Parameters that represent strides are of the form "d1s".  The
interpretation is similar to above, except that the s indicates
a stride parameter.
</p>
<p>
</p>
<p>
</p>
<p>
The exceptions to the above rule are "dest", "src", "dstr", "sstr", etc.
These are aliases for "d1", "s1", "d1s", and "s1s", respectively.  This
form is deprecated and will be removed in the 0.4 series.
</p>
<p>
</p>
<p>
</p>
<p>
Two 