DOC: link background topics from feature overview

doc/source/written/background/parsing.rst

@@ -1,3 +1,5 @@
+.. _parsers_and_containers:
+
 Parsing code output and using containers
 ========================================
 

doc/source/written/background/phonon_dos.rst

@@ -1,3 +1,5 @@
+.. _pdos_from_vacf:
+
 Velocity autocorrelation function and phonon DOS
 ================================================
 

doc/source/written/features.rst

@@ -3,50 +3,53 @@
 Features
 ========
 
-* container classes for single unit cells (:class:`~pwtools.crys.Structure`)
+* Container classes for single unit cells (:class:`~pwtools.crys.Structure`)
   and structure sequences such as molecular dynamics trajectories, relaxation
-  runs or NEB paths (:class:`~pwtools.crys.Trajectory`)
+  runs or NEB paths (:class:`~pwtools.crys.Trajectory`). See
+  :ref:`parsers_and_containers`.
 
-* classes to set up calculations (parameter studies) based on template input
-  files for any kind of computational backend (:mod:`~pwtools.batch`)
+* Classes to set up calculations (parameter studies) based on template input
+  files for any kind of computational backend (:mod:`~pwtools.batch`). See
+  :ref:`param_study`.
 
-* simple sqlite3 interface with convenience data extraction methods
-  (:mod:`~pwtools.sql`)
+* Simple sqlite3 interface with convenience data extraction methods
+  (:mod:`~pwtools.sql`).
 
-* parsing of PWscf (QE_), CPMD_ , CP2K_ and LAMMPS_
-  output into Python objects for easy access (:mod:`~pwtools.parse`)
+* Parsing of PWscf (QE_), CPMD_ , CP2K_ and LAMMPS_
+  output into Python objects for easy access (:mod:`~pwtools.parse`). See
+  :ref:`parsers_and_containers`.
 
-* structure io: read cif, pdb, write axsf, cif, xyz  (:mod:`~pwtools.io`)
+* Structure io: read cif, pdb, write axsf, cif, xyz  (:mod:`~pwtools.io`)
 
-* pythonic interface to external molecular viewers for interactive use:
-  xcrysden_, avogadro_, jmol_, VMD_ (:mod:`~pwtools.visualize`)
+* Pythonic interface to external molecular viewers for interactive use:
+  xcrysden_, avogadro_, jmol_, VMD_ (:mod:`~pwtools.visualize`).
 
-* interface to the Elk_ code's EOS fitting tool and own implementation (Vinet
-  EOS) (:mod:`~pwtools.eos`)
+* EOS fitting tools (:mod:`~pwtools.eos`)
 
-* thermodynamic properties in the quasi-harmonic approximation from phonon
-  density of states, QHA implementation (:mod:`~pwtools.thermo`)
+* Thermodynamic properties in the quasi-harmonic approximation from phonon
+  density of states, QHA implementation (:mod:`~pwtools.thermo`). See
+  :ref:`qha`.
 
 * MD analysis: radial pair distribution function (own implementation and VMD_
-  interface), RMS, RMSD (:mod:`~pwtools.crys`)
+  interface), RMS, RMSD (:mod:`~pwtools.crys`).
 
-* velocity autocorrelation function and phonon DOS from MD trajectories
-  (:mod:`~pwtools.pydos`)
+* Velocity autocorrelation function and phonon DOS from MD trajectories
+  (:mod:`~pwtools.pydos`). See :ref:`pdos_from_vacf`.
 
-* unit cell related tools: super cell building, coordinate transformation,
-  k-grid tools, ... (:mod:`~pwtools.crys`)
+* Unit cell related tools: super cell building, coordinate transformation,
+  k-grid tools, ... (:mod:`~pwtools.crys`).
 
-* thin wrappers for spglib_ functions (:mod:`~pwtools.symmetry`)
+* Thin wrappers for spglib_ functions (:mod:`~pwtools.symmetry`)
 
-* functions and classes to extend numpy/scipy, e.g. N-dim polynomial fitting
+* Functions and classes to extend numpy/scipy, e.g. N-dim polynomial fitting
   and a number of convenient 1D classes (polynomial, spline) with a common
-  API (:mod:`~pwtools.num`)
+  API (:mod:`~pwtools.num`).
 
 * N-dim radial basis function interpolation and fitting (:mod:`~pwtools.rbf`)
 
-* basic signal processing / fft related tools (:mod:`~pwtools.signal`)
+* Basic signal processing / fft related tools (:mod:`~pwtools.signal`)
 
-* tools to handle matplotlib plots in scripts (:mod:`~pwtools.mpl`)
+* Tools to handle matplotlib plots in scripts (:mod:`~pwtools.mpl`)
 
 * QE and LAMMPS calculators for ASE (:mod:`~pwtools.calculators`)