ds data at the memory location specified by <EM>address</EM>
and returns it as an integer.
<EM>type</EM> is one of <B>:char, :byte, :short, :long, :integer, :float</B>,
and <B>:double</B>.
If no <EM>vector</EM> is given,
the address is taken in the unix's process space.
For example, since the a.out header is located at <TT>#x2000</TT> on SunOS4,
<TT>(sys:peek #x2000 :short)</TT> returns the magic number (usually <TT>#o403</TT>).
Solaris2 locates the ELF header at <TT>#10000</TT>,
and <TT>(sys:peek #x10000 :