source: vendor/3.5.2/docs-xml/smbdotconf/printing/lprmcommand.xml

<samba:parameter name="lprm command"
                 context="S"
                                 type="string"
                                 print="1"
                 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
<description>
    <para>This parameter specifies the command to be 
    executed on the server host in order to delete a print job.</para>

    <para>This command should be a program or script which takes 
    a printer name and job number, and deletes the print job.</para>

    <para>If a <parameter moreinfo="none">%p</parameter> is given then the printer name 
    is put in its place. A <parameter moreinfo="none">%j</parameter> is replaced with 
    the job number (an integer).</para>

    <para>Note that it is good practice to include the absolute 
    path in the <parameter moreinfo="none">lprm command</parameter> as the PATH may not be 
    available to the server.</para>

        <para>
        Examples of use are:
<programlisting>
lprm command = /usr/bin/lprm -P%p %j

or

lprm command = /usr/bin/cancel %p-%j
</programlisting>
        </para>

</description>
<related>printing</related>

<value type="default"> determined by printing parameter</value>
</samba:parameter>