What does {camera} stand for in ParaView Catalyst scripts

When I export Catalyst scripts, I get file names of the like

pNG1.Writer.FileName = ‘RenderView1_{timestep:06d}_{camera}.png’

What does {camera} stand for and which node in Conduit should I fill for this field to be replaced by ParaView Catalyst?


It is used in the Phi-Theta Camera Mode where several PNG’s are create for each timestep. So phi and theta parameters are used in the filename

I see, thanks.