anchor.diff:  
   ==== Example message
   
  -...
  +tpcall() request:
  +
  +--------------------------------------------------------------------------------
  +
  +--------------------------------------------------------------------------------
   
   
   === TP Notify / TP Broadcast message block
  
positive.code: ==== Workflows
  ...
  
  ===== Syncrhouns tpcall
  
  ...
  
  ===== Asyncrhous call
  
  ...
  
  
negative.code: *Type code: TPCALL*
  
  Tpcall message block is used for lot of XATMI messaging purposes. It services
  as call for *tpcall(3)*, *tpacall(3)*, Message starts with *NETCALL*. 
  NETCALL tag '0x1019' ('command_id') is set to value in range from *1* - *7*. 
  Tag '0x100F' ('msg_type') is set to *A*.
  
  .XATMI call
  |=========================================================
  