anchor.diff:  
   The following example demonstrates changing packet fields. The Field Engine (FE) has a limited number of instructions/operation, which support most use cases. 
   
  -*The FE can*::
  +*The FE can*:
  +
  +// this line is here to fix rendering bug
  +
   * Allocate stream variables in a stream context
   * Write a stream variable to a packet offset
   * Change packet size
   * and more...
   * There is a plan to add LuaJIT to be more flexible at the cost of performance.
   
  -*Examples:*::
  +// this line is here to fix rendering bug
  +
  +*Examples*:
  +
  +// this line is here to fix rendering bug
  +
   * Change ipv4.tos value (1 to 10)
   * Change packet size to a random value in the range 64 to 9K
   * Create a range of flows (change src_ip, dest_ip, src_port, dest_port) 
   * Update the IPv4 checksum 
   
  -For more information, see link:trex_rpc_server_spec.html#_object_type_em_vm_em_a_id_vm_obj_a[here]
  +For more information, see: link:trex_rpc_server_spec.html#_object_type_em_vm_em_a_id_vm_obj_a[here]
   // add link to Python API: http://trex-tgn.cisco.com/trex/doc/cp_stl_docs/api/field_engine.html
   
   The following example demonstrates creating a SYN attack from many src addresses to one server.
  
positive.code: 
  ==== Tutorial: Loops of streams
  
  *Goal* : Demonstrate a limited loop of streams
  
  *File*:: link:{github_stl_path}/burst_3st_loop_x_times.py[stl/burst_3st_loop_x_times.py]
  
  
negative.code:                             ]).get_streams()
  
  ----
  <1> Go back to S0, but limit it to 2 loops.
  
  
  ==== Tutorial: IMIX with UDP packets, bi-directional 
  
  *Goal*: Demonstrate how to create an IMIX traffic profile.
  
  This profile defines 3 streams, with packets of different sizes. The rate is different for each stream/size. See the link:https://en.wikipedia.org/wiki/Internet_Mix[Wikipedia article on Internet Mix].
  
  