<listitem><para><literal>Missing</literal> is the number of package names that were referenced in
a dependency but were not provided by any package. Missing packages may
- be in evidence if a full distribution is not accessed, or if a package
+ be an evidence if a full distribution is not accessed, or if a package
(real or virtual) has been dropped from the distribution. Usually they
are referenced from Conflicts or Breaks statements.</para>
</listitem>
for use in a shell tab complete function and the output is generated
extremely quickly. This command is best used with the
<option>--generate</option> option.</para>
- <para>Note that a package which APT knows of is not nessasarily available to download,
+ <para>Note that a package which APT knows of is not necessarily available to download,
installable or installed, e.g. virtual packages are also listed in the generated list.
</para></listitem>
</varlistentry>