ET means Extra Tread, ML stands for Mining and Logging, MPT means Multi-Purpose Truck and POR means Professional Off-Road.
Les sigles &lt; &lt; ET &gt; &gt; , &lt; &lt; ML &gt; &gt; , &lt; &lt; MPT &gt; &gt; , et &lt; &lt; POR &gt; &gt; signifient respectivement: &lt; &lt; extra tread &gt; &gt; , &lt; &lt; mining and logging &gt; &gt; , &lt; &lt; multi-purpose truck &gt; &gt; , et &lt; &lt; professional off-road &gt; &gt; .