Modules greyscale / hide on lock

There are some patching examples, where single modules or cables are in a lighter grey than the standart modules. How can i do this?

select a cable (and/or node) and press CRTL + h

this (ctrl+h) is called “hide on lock”

when you lock your patch with ctrl+e afterwards, every grey node and or link will be invisible.

i often use those grey nodes/links for “auxilliary” parts in the patch , so that the important structure keeps clear.

Great feature. I do 't know this from max/MSP.