diff --git a/doc/src/Section_howto.txt b/doc/src/Section_howto.txt
index 7d1b82f4f6..2784858f02 100644
--- a/doc/src/Section_howto.txt
+++ b/doc/src/Section_howto.txt
@@ -2911,14 +2911,15 @@ too close, which can cause numerical issues.
 
 6.28 Magnetic spins :link(howto_28),h4
 
-The magnetic spin simualtions are enabled by the SPIN package, whose
-implementation is detailed in "Tranchida"_#Tranchida7.
+Classical magnetic spin simualtions can be performed via the SPIN
+package.  The algrorithmic and implementation details are described in
+"Tranchida"_#Tranchida7.
 
-The model representents the simulation of atomic magnetic spins coupled 
-to lattice vibrations. The dynamics of those magnetic spins can be used 
-to simulate a broad range a phenomena related to magneto-elasticity, or 
-or to study the influence of defects on the magnetic properties of 
-materials. 
+The model representents the simulation of atomic magnetic spins
+coupled to lattice vibrations. The dynamics of those magnetic spins
+can be used to simulate a broad range a phenomena related to
+magneto-elasticity, or or to study the influence of defects on the
+magnetic properties of materials.
 
 The magnetic spins are interacting with each others and with the 
 lattice via pair interactions. Typically, the magnetic exchange 
diff --git a/doc/src/Section_packages.txt b/doc/src/Section_packages.txt
index e9387fe35f..7c762fc055 100644
--- a/doc/src/Section_packages.txt
+++ b/doc/src/Section_packages.txt
@@ -114,6 +114,7 @@ Package, Description, Doc page, Example, Library
 "RIGID"_#RIGID, rigid bodies and constraints, "fix rigid"_fix_rigid.html, rigid, -
 "SHOCK"_#SHOCK, shock loading methods, "fix msst"_fix_msst.html, -, -
 "SNAP"_#SNAP, quantum-fitted potential, "pair_style snap"_pair_snap.html, snap, -
+"SPIN"_#SPIN, magnetic atomic spin dynamics, "Section 6.6.28"_Section_howto.html#howto_28, SPIN, -
 "SRD"_#SRD, stochastic rotation dynamics, "fix srd"_fix_srd.html, srd, -
 "VORONOI"_#VORONOI, Voronoi tesselation, "compute voronoi/atom"_compute_voronoi_atom.html, -, ext :tb(ea=c,ca1=l)
 
@@ -1415,6 +1416,38 @@ examples/snap :ul
 
 :line
 
+SPIN package :link(SNAP),h4
+
+[Contents:]
+
+Model atomic magnetic spins classically, coupled to atoms moving in
+the usual manner via MD.  Various pair, fix, and compute styles.
+
+[Author:] Julian Tranchida (Sandia).
+
+[Install or un-install:]
+
+make yes-spin
+make machine :pre
+
+make no-spin
+make machine :pre
+
+[Supporting info:]
+
+src/SPIN: filenames -> commands
+"Section 6.28"_Section_howto.html#howto_28
+"pair_style spin/dmi"_pair_spin_dmi.html
+"pair_style spin/exchange"_pair_spin_exchange.html
+"pair_style spin/magelec"_pair_spin_magelec.html
+"pair_style spin/neel"_pair_spin_neel.html
+"fix nve/spin"_fix_nve_spin.html
+"fix precession/spin"_fix_precession_spin.html
+"compute spin"_compute_spin.html
+examples/SPIN :ul
+
+:line
+
 SRD package :link(SRD),h4
 
 [Contents:]