Change plan region to invisible lines

[vanderloo5]

I've done this a hundred times but for some reason now I'm not seeing the option to do this. Is there something I'm missing for enabling a plan region boundary to have invisible lines?
Thank You

[Steve_Stafford]

Are you sure it's a Plan Region you mean? There isn't an option for those and they don't print either. If you mean Filled or Masking Regions then select the segments while editing their boundary and choose the <Invisible Lines> Linestyle.

Plan Regions can be overridden via right-click Override Graphics in View > Elements > uncheck Visible. Keep in mind that means everyone will have to use Reveal Hidden Elements to find them later, better to just use Visibility/Graphics to turn off their category.