what does the list mean at ProfileGPU?

hi all,

in my project, Im trying to reduce the processing load of GPU.

But I cant understand the detail of the list(and the meaning of the number) of the result ProfileGPU.

Among them, especially I wanna understand these detail,

■PerPass
-PosOnlyOpaque
-Opaque

■BasePass
-StaticMaskedLightmapped
-StaticOpaqueNoLightmap
-StaticOpaqueLightmapped
-Dynamic

I have some questions.

-0. Is there any good document about details of ProfileGPU?

-1. What these list and number means?

-2. In my project, StaticOpaqueLightmapped and Dynamic occupied much time (much prims)… Please teach me the effective optimization about these.

bump.

is there documentation on what all these different things are actually referring to?