old_contents: # Copyright 2016 Hewlett Packard Enterprise Development LP
  #
  # Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  # the License. You may obtain a copy of the License at
  #
  # http://www.apache.org/licenses/LICENSE-2.0
  # Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
  # on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for
  # the specific language governing permissions and limitations under the License.
  
  # @ Data types
  from .expression import DType
  from .expression import float32, float64
  from .expression import int8, int16, int32, int64
  from .expression import uint8, uint16, uint32, uint64
  from .expression import TensorType
  
  # @ Expressions
  from .expression import Scalar, Variable, InputTensor, OutputTensor, PositionTensor, LocalTensor
  
  # @ Tensor functions
  from .expression import position_in
  from .expression import output, output_like
  from .expression import zeros, ones
  
  # @ Scalar functions
  # @@ Utility
  from .expression import variable, cast
  # @@ Unary math
  from .expression import arccos, arcsin, arctan, cos, cosh, sin, sinh, tan, tanh
  from .expression import exp, log, log10, sqrt
  from .expression import ceil, absolute, floor
  # @@ Binary math
  from .expression import minimum, maximum, power, arctan2, logical_and, logical_or, logical_not
  
  # @ Control flow
  from .expression import arange
  from .expression import if_, elif_, else_
  
  # @ Operator functions
  from .operator import operator, gradient, evaluate, profile, as_tensorflow
  
  # @ Local runtime environment functions
  from .local import version, logger, cuda_enabled, cache_directory, clear_op_cache
  
new_contents: # Copyright 2016 Hewlett Packard Enterprise Development LP
  #
  # Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  # the License. You may obtain a copy of the License at
  #
  # http://www.apache.org/licenses/LICENSE-2.0
  # Unless required by applicable law or agreed to in writing, software distributed under the License is distributed
  # on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for
  # the specific language governing permissions and limitations under the License.
  
  # @ Data types
  from .expression import DType
  from .expression import float32, float64
  from .expression import int8, int16, int32, int64
  from .expression import uint8, uint16, uint32, uint64
  from .expression import TensorType
  
  # @ Expressions
  from .expression import Scalar, Variable, InputTensor, OutputTensor, PositionTensor, LocalTensor
  
  # @ Tensor functions
  from .expression import position_in
  from .expression import output, output_like
  from .expression import zeros, ones
  
  # @ Scalar functions
  # @@ Utility
  from .expression import variable, cast
  # @@ Unary math
  from .expression import arccos, arcsin, arctan, cos, cosh, sin, sinh, tan, tanh
  from .expression import exp, log, log10, sqrt
  from .expression import ceil, absolute, floor
  from .expression import logical_not
  # @@ Binary math
  from .expression import minimum, maximum, power, arctan2, logical_and, logical_or
  
  # @ Control flow
  from .expression import arange
  from .expression import if_, elif_, else_
  
  # @ Operator functions
  from .operator import operator, gradient, evaluate, profile, as_tensorflow
  
  # @ Local runtime environment functions
  from .local import version, logger, cuda_enabled, cache_directory, clear_op_cache
  
subject: Fix documentation mistake: logical_not is unary.