Removed functionality
^^^^^^^^^^^^^^^^^^^^^
-Removed constant-acceleration groups support
-""""""""""""""""""""""""""""""""""""""""""""
-This code has been broken since before GROMACS 4.6, so it has been
-removed.
-
-:issue:`1354`
-
.. Note to developers!
Please use """"""" to underline the individual entries for fixed issues in the subfolders,
otherwise the formatting on the webpage is messed up.
documentation, installation, and teaching new users.
:issue:`3808`
+
+Removed support for x86 MIC, ARMv7, Sparc64 HPC-ACE, and IBM VMX SIMD
+"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+These platforms are dead in HPC and so are no longer supported. The
+KNL platform is unaffected by this change.
+
+:issue:`3891`
+
+Removed deprecated environment variables
+""""""""""""""""""""""""""""""""""""""""
+
+The following environment variables were removed after being deprecated
+in favor of better-named alternatives:
+
+* ``GMX_CUDA_NB_ANA_EWALD`` and ``GMX_OCL_NB_ANA_EWALD`` (use ``GMX_GPU_NB_ANA_EWALD``)
+* ``GMX_CUDA_NB_TAB_EWALD`` and ``GMX_OCL_NB_TAB_EWALD`` (use ``GMX_GPU_NB_TAB_EWALD``)
+* ``GMX_CUDA_NB_EWALD_TWINCUT`` and ``GMX_OCL_NB_EWALD_TWINCUT`` (use ``GMX_GPU_NB_EWALD_TWINCUT``)
+
+:issue:`3803`
+
+Removed the ability for gmx wham to read .pdo files
+"""""""""""""""""""""""""""""""""""""""""""""""""""
+
+Files in .pdo format were written by |Gromacs| versions prior to 4.0.
+That is so long ago that being able to read them is no longer
+relevant, so this capability was deprecated in version 2021. If you do
+need to read such files, please use an older version of |Gromacs|.