fix tof.md

hugo/content/py/instr/scan/_index.md

@@ -46,13 +46,18 @@ To specify a scan with `n` equidistant steps in the vertical wavenumber $q_z$, u
 scan = ba.QzScan(n, qz_start, qz_stop)
 ```
 
-Alternatives are
+For other sequences of $q_z$ values, use the more generic
 ```python
-scan = ba.QzScan(q_vector)
+scan = ba.AlphaScan(axis)
 ```
-and
+
+The Axis API may change soon and will be documented then.
+
+A third alternative consists in passing a NumPy array,
 ```python
-scan = ba.QzScan(axis)
+import numpy as np
+qz_vector = np.linspace(0.01, 1, n)
+scan = ba.QzScan(qz_vector)
 ```
 
 After constructing a scan, set the wavelength and optionally a constant offset

hugo/content/py/instr/scan/tof.md

@@ -5,21 +5,12 @@ weight = 30
 
 ## Time-of-flight reflectometry
 
-This short tutorial quickly illustrates the setup of a
-time-of-flight (TOF) reflectometry simulated experiment.
+This example shows how to set up a $q_z$ scan using a NumPy array.
+This can be used to simulate a time-of-flight (TOF) reflectometry experiment.
 
-Setting up a TOF simulation boils down to specifying the range of values
-spanned by the $q_z$ vector, rather than the range spanned by the angle $\theta$ of the beam:
-
-``` python
-    qzs = np.linspace(0.01, 1.0, scan_size)  # qz-values
-    scan = ba.QSpecScan(qzs)
-    simulation = ba.SpecularSimulation()
-    simulation.setScan(scan)
-```
 
 {{< galleryscg >}}
-{{< figscg src="/img/auto/specular/TimeOfFlightReflectometry.png" width="500px" caption="This figure shows the reflectometry signal obtained after running the TOF simulation of the script below." >}}
+{{< figscg src="/img/auto/specular/TimeOfFlightReflectometry.png" width="500px" >}}
 {{< /galleryscg >}}
 
 {{< highlightfile file="Examples/specular/TimeOfFlightReflectometry.py" >}}