<th1>
  #
  # This is a "TH1 fragment" used to test the Tcl integration features of TH1.
  # The corresponding test file executes this file using the test-th-render
  # Fossil command.
  #
  proc doOut {msg} {puts $msg; puts \n}

  #
  # BUGBUG: Attempting to divide by zero will crash TH1 with the error:
  #         "child killed: floating-point exception"
  #
  # doOut [tclEval th1Expr 2/0]

  #
  # NOTE: For now, just cause an expression syntax error.
  #
  doOut [tclEval th1Expr 2**0]
</th1>