Update

Author: amjjbonvin

education/HADDOCK3/HADDOCK3-antibody-antigen/index.md

@@ -284,54 +284,11 @@ If you are installing HADDOCK3 on your own system, check the instructions and re
 To obtain HADDOCK3 navigate to [its repository][haddock-repo], fill the
 registration form, and then follow the [installation instructions](https://www.bonvinlab.org/haddock3/INSTALL.html){:target="_blank"}.
 
+Provided you have a working Python version (3.9 to 3.12). you can install HADDOCK3 simply through
 
-#### Installing CNS
-
-The other required piece of software to run HADDOCK is its computational engine,
-CNS (Crystallography and NMR System –
-[https://cns-online.org](https://cns-online.org){:target="_blank"}). CNS is
-freely available for non-profit organizations. To get access to all
-features of HADDOCK you will need to compile CNS using the additional files
-provided in the HADDOCK distribution in the `extras/cns1.3` directory. Compilation of
-CNS might be non-trivial. Some guidance on installing CNS is provided on the online
-HADDOCK3 documentation page [here](https://github.com/haddocking/haddock3/blob/main/docs/CNS.md){:target="_blank"}.
-
-Once CNS has been properly compiled, you will have create a symbolic link or copy the executable to `haddock3/bin/cns` 
-and make sure it is executable and functional. Try starting `cns` from the command line. You should see the following output:
-
-<details style="background-color:#DAE4E7">
-  <summary>
-  <i>View CNS prompt output</i><i class="material-icons">expand_more</i>
- </summary>
-<pre>
-          ============================================================
-          |                                                          |
-          |            Crystallography & NMR System (CNS)            |
-          |                         CNSsolve                         |
-          |                                                          |
-          ============================================================
-           Version: 1.3 at patch level U
-           Status: Special UU release with Rg, paramagnetic
-                   and Z-restraints (A. Bonvin, UU 2013)
-          ============================================================
-           Written by: A.T.Brunger, P.D.Adams, G.M.Clore, W.L.DeLano,
-                       P.Gros, R.W.Grosse-Kunstleve,J.-S.Jiang,J.M.Krahn,
-                       J.Kuszewski, M.Nilges, N.S.Pannu, R.J.Read,
-                       L.M.Rice, G.F.Schroeder, T.Simonson, G.L.Warren.
-           Copyright (c) 1997-2010 Yale University
-          ============================================================
-           Running on machine: hostname unknown (Linux,64-bit)
-           Program started by: l00902
-           Program started at: 16:34:22 on 06-Dec-2023
-          ============================================================
-
- FFT3C: Using FFTPACK4.1
-
-CNSsolve>
-</pre>
-</details>
-<br>
-Exit the CNS command line by typing `stop`.
+```bash
+pip install haddock3
+```
 
 
 #### Auxiliary software