You can search for identifiers within the package.
in-package search v0.2.0
module type P = sig ... end
module In_memory : sig ... end
In_memory is a context that can be used to instantiate an Arith or Wasm PVM. It's signature is Protocol.Alpha_context.Sc_rollup.ArithPVM.P = Protocol.Alpha_context.Sc_rollup.Wasm_2_0_0PVM.P
In_memory
Protocol.Alpha_context.Sc_rollup.ArithPVM.P
Protocol.Alpha_context.Sc_rollup.Wasm_2_0_0PVM.P