diff --git a/fsl/wrappers/__init__.py b/fsl/wrappers/__init__.py
index 55a3b14dd37cf12c9e9717ea7415f9fe9ee25e97..c86358e4f65dff5eaec95fcbbfa31d7dd0058fa9 100644
--- a/fsl/wrappers/__init__.py
+++ b/fsl/wrappers/__init__.py
@@ -6,16 +6,42 @@
 #
 """This package contains wrappers for various FSL command line tools, allowing
 them to be called from Python.
+
+
+Most of these wrapper functions strive to provide as-close an interface to the
+command-line tool as possible. Most functions use positional arguments for
+required options, and keyword arguments for all other options, with argument
+names equivalent to command line option names.
+
+
+For options where this is not possible (e.g. ``flirt -2D``),an alias is used
+instead. Aliases may also be used to provide a more readable interface (e.g.
+the :func:`.bet` function uses ``mask`` instead of ``m``).
+
+
+Wrapper functions for commands which accept NIfTI image or numeric text files
+will for the most part accept either in-memory ``nibabel`` images/Numpy arrays
+or file names as inputs. For commands which produce image or numeric text file
+outputs, the special :data:`.LOAD` value can be used to indicate that the file
+should be loaded and returned in-memory from the wrapper function. For example,
+if we want to FLIRT two images and get the result, we can do this::
+
+    import nibabel as nib
+    from fsl.wrappers import flirt, LOAD
+
+    src     = nib.load('src.nii')
+    ref     = nib.load('ref.nii')
+    aligned = flirt(src, ref, out=LOAD)['out']
+
+
+If you are writing wrapper functions, read through the :mod:`.wrapperutils`
+module - it contains several useful functions and decorators.
 """
 
-from .wrapperutils import (applyArgStyle,   # noqa
-                           required,
-                           fileOrImage,
-                           fileOrArray,
-                           LOAD,
-                           SHOW_IF_TRUE,
-                           HIDE_IF_TRUE)
-from .bet          import (bet,)            # noqa
+
+from .wrapperutils import (LOAD,)           # noqa
+from .bet          import (bet,             # noqa
+                           robustfov)
 from .eddy         import (eddy_cuda,       # noqa
                            topup)
 from .flirt        import (flirt,           # noqa