Argument(name='input distance column', type='string',
default='z piezo (m)',
help="""
-Name of the column to use as the surface positioning input.
+Name of the column to use as the surface position input.
""".strip()),
Argument(name='input deflection column', type='string',
default='deflection (m)',
Argument(name='output distance column', type='string',
default='surface distance',
help="""
-Name of the column (without units) to use as the surface positioning output.
+Name of the column (without units) to use as the surface position output.
""".strip()),
Argument(name='output deflection column', type='string',
default='surface deflection',