MMM.CThis comment is for CollectionModule.
      module 
       InnerModuleA
       
      
       : sig ... 
       end
      
     
    This comment is for InnerModuleA.
      module 
       type InnerModuleTypeA
      
       = 
       InnerModuleA.InnerModuleTypeA'
       
      
     
    This comment is for InnerModuleTypeA.