Frame payload FCS question

Hi all,
is there any example regarding the CRC16 automatically provided by DW1000 chip for transmitted frames ?

From the documentation it is not clear for me if:

  1. It is appended after the user payload OR replaces the last 2 bytes of user payload provided to dwt_writetxdata/dwt_writetxfctrl APIs.
  2. Is this function enabled by default.
  3. On receive side which bytes should be used to rebuild the CRC.
  4. Any example ?

Thanks for your attention,