| Intrinsic | 
Function | 
  | ADDOPT | 
  Adds an option entry to the opt parameter. | 
  | INITOPT | 
  Initializes the opt parameter so that entries may be
      added. | 
  | IPCCHECK | 
  Returns the number of the last recorded NetIPC error for a call or VC
      socket. | 
  | IPCCONNECT | 
  Requests a connection (a virtual circuit) to another process; returns a VC
      socket descriptor for a VC socket belonging to the calling
      process. | 
  | IPCCONTROL | 
  Performs special operations such as enabling nowait I/O, and
      enabling user-level tracing. | 
  | IPCCREATE | 
  Creates a call socket for the calling process. | 
  | IPCDEST | 
  Returns a destination descriptor which the calling process can use to
      establish a connection to another process. | 
  | IPCERRMSG | 
  Returns the IPC error message corresponding to a given error
      code. | 
  | IPCGET | 
  Enables the calling process to obtain a VC socket or call socket that has
      been given away by another process. | 
  | IPCGIVE | 
  Gives away a VC socket or call socket, thereby allowing another process to
      obtain it. | 
  | IPCLOOKUP | 
  Returns a destination descriptor associated with a given socket
      name. | 
  | IPCNAME | 
  Specifies a name for a call socket, thereby enabling other processes to
      obtain access to that socket. | 
  | IPCNAMERASE | 
  Deletes a call socket name from the call socket registry. | 
  | IPCRECV | 
  Receives the reply to a connection request, thereby establishing the
      connection, or receives data on an already established connection. | 
  | IPCRECVCN | 
  Receives a connection request from another process; returns a VC socket
      descriptor for a VC socket belonging to the calling process. | 
  | IPCSEND | 
  Sends data on a connection. | 
  | IPCSHUTDOWN | 
  Releases a socket descriptor and any resources associated with it. | 
  | OPTOVERHEAD | 
  Returns the number of bytes needed for the opt (option)
      parameter, a parameter common to many IPC intrinsics | 
  | READOPT | 
  Allows the user to read an entry from the opt
      array. |