abc<washtags keep="br,x"><h1>abc</h1>
<p>lskdjfls</p>
<br>lsk<strong>djfl</strong>skjdf</br>
<x>sldkfjk</x>
</washtags>
abc<washtags keep="p" strip="br,x"><h1>abc</h1>
<p>lskdjfls</p>
<br>lsk<strong>djfl</strong>skjdf</br>
<x>sldkfjk</x>
</washtags>
def
abc<washtags strip="br,x"><h1>abc</h1>
<p>lskdjfls</p>
<br>lsk<strong>djfl</strong>skjdf</br>
<x>sldkfjk</x>
</washtags>
def