what is this button called?

[S_ A]

Hello,

I am very new to photoshop. I accidently found a button. I dnt know what its called ot why its there for. can anyone help?

[josantgomez · Accepted solution]

Activar descativar filtrado de capas. Esto de puede ver en "descubrir" buscando activar/desactivar filtrado de capas, con sus explicaciones

[S_ A]

Thank you so much. Google Translator helped me.

[josantgomez]

I´ve just seen a couple of mistakes in the words I wrote... Sorry