Remove elements that don't contain any text - separator?

[qlwik]

Hi,
in list processing what is separator for "remove elements that don't contain any text"?

Or if You can't use more then one, then how I can remove from list linesthat contain list of elements?

 

[rostonix]

Use delete by regular expression
(word1|word2|word3)

 

[qlwik]

Yes that works, but I want to delete all other lines, and keep those which contain (word1|word2|word3)

 

[rostonix]

Next option then (last one) http://i.gyazo.com/656b745f00e0b7bc44fe6ac724b19008.png