diff --git a/doc/Section_howto.html b/doc/Section_howto.html
index 2506f650e9044632a70201b5f6d598f88a3a91c8..8697114b5fb857bc73fd814730b224fa9e3afe92 100644
--- a/doc/Section_howto.html
+++ b/doc/Section_howto.html
@@ -838,7 +838,9 @@ indenter's interaction with the simulation atoms.  These values are
 accessed via the same format as a compute's values, as f_ID or
 f_ID[N].  See the doc pages for individual fix commands to see which
 ones generate global values that can be output with thermodynamic
-info.
+info.  The <A HREF = "fix_ave_time.html">fix ave/time</A> command generates
+time-averaged global quantities which can be accessed for
+thermodynamic output.
 </P>
 <P>Input script variables of various kinds are defined by the
 <A HREF = "variable.html">variable</A> command.  All kinds except the atom-style
@@ -874,20 +876,28 @@ accessed by the dump custom command, this is a general way to define
 some quantity you want calculated and output in a dump file.
 </P>
 <P><A HREF = "fix.html">Fixes</A> can also generate per-atom values to output to dump
-files.  For example, the <A HREF = "fix_ave_atom.html">fix ave/atom</A> command does
-time-averaging of atom quantities, such as velocity or energy or
-stress which can then be output in a dump file.  These values are
-accessed as f_myKE for a scalar per-atom quantity or as
-f_myStress[2] for a component of a vector per-atom quantity.
-</P>
-<P>Two other fixes are of particular note for output.  Neither produces
-values for thermodynamic or dump output.  Instead they output their
-results directly to a file.
+files.  For example, the <A HREF = "fix_ave_atom.html">fix ave/atom</A> command
+calculates time-averages of compute quantities.  As indicated in the
+preceeding paragraph, a <A HREF = "compute.html">compute quantity</A> can be a
+calculated value such as <A HREF = "compute_epair_atom.html">energy</A> or
+<A HREF = "compute_stress_atom.html">stress</A> or it can be a value calculated by
+an atom-style <A HREF = "variable.html">variable</A>, or it can be an <A HREF = "compute_attribute_atom.html">atom
+attribute</A> such as velocity or force.
+These per-atom fix values are accessed by the <A HREF = "dump.html">dump custom</A>
+command as f_myKE for a scalar per-atom quantity or as f_myStress[2]
+for a component of a vector per-atom quantity.
+</P>
+<P>Two other fixes are of particular note for output: <A HREF = "fix_ave_time.html">fix
+ave/time</A> and <A HREF = "fix_ave_spatial.html">fix
+ave/spatial</A>.
 </P>
 <P>The <A HREF = "fix_ave_time.html">fix ave/time</A> command enables time-averaging of
 global quantities like temperature or pressure.  The global quantities
 are calculated by a <A HREF = "compute.html">compute</A> or a <A HREF = "fix.html">fix</A>.  The
-compute or fix must generate global scalar or vector quantities.
+compute or fix must generate global scalar or vector quantities.  The
+time-averaged values generated by <A HREF = "fix_ave_time.html">fix ave/time</A> can
+be written directly to a file and/or accessed by the <A HREF = "thermo_style.html">thermo_style
+custom</A> command.
 </P>
 <P>The <A HREF = "fix_ave_spatial.html">fix ave/spatial</A> command enables
 spatial-averaging of per-atom quantities like per-atom energy or
@@ -897,6 +907,8 @@ compute or fix must generate per-atom scalar or vector quantities.
 Note that if you use the <A HREF = "fix_ave_atom.html">fix ave/atom</A> command with
 fix ave/spatial, it means you are effectively calculating a time
 average of a spatial average of a time-averaged per-atom quantity.
+The time-averaged values generated by <A HREF = "fix_ave_spatial.html">fix
+ave/spatial</A> are written directly to a file.
 </P>
 <HR>
 
diff --git a/doc/Section_howto.txt b/doc/Section_howto.txt
index 1a74e6c6ba5cbe0354c78252528d9a322b10cb75..362aa72414ae3442588c8ea5e9b3a62b6b06f08a 100644
--- a/doc/Section_howto.txt
+++ b/doc/Section_howto.txt
@@ -831,7 +831,9 @@ indenter's interaction with the simulation atoms.  These values are
 accessed via the same format as a compute's values, as f_ID or
 f_ID\[N\].  See the doc pages for individual fix commands to see which
 ones generate global values that can be output with thermodynamic
-info.
+info.  The "fix ave/time"_fix_ave_time.html command generates
+time-averaged global quantities which can be accessed for
+thermodynamic output.
 
 Input script variables of various kinds are defined by the
 "variable"_variable.html command.  All kinds except the atom-style
@@ -867,20 +869,28 @@ accessed by the dump custom command, this is a general way to define
 some quantity you want calculated and output in a dump file.
 
 "Fixes"_fix.html can also generate per-atom values to output to dump
-files.  For example, the "fix ave/atom"_fix_ave_atom.html command does
-time-averaging of atom quantities, such as velocity or energy or
-stress which can then be output in a dump file.  These values are
-accessed as f_myKE for a scalar per-atom quantity or as
-f_myStress\[2\] for a component of a vector per-atom quantity.
-
-Two other fixes are of particular note for output.  Neither produces
-values for thermodynamic or dump output.  Instead they output their
-results directly to a file.
+files.  For example, the "fix ave/atom"_fix_ave_atom.html command
+calculates time-averages of compute quantities.  As indicated in the
+preceeding paragraph, a "compute quantity"_compute.html can be a
+calculated value such as "energy"_compute_epair_atom.html or
+"stress"_compute_stress_atom.html or it can be a value calculated by
+an atom-style "variable"_variable.html, or it can be an "atom
+attribute"_compute_attribute_atom.html such as velocity or force.
+These per-atom fix values are accessed by the "dump custom"_dump.html
+command as f_myKE for a scalar per-atom quantity or as f_myStress\[2\]
+for a component of a vector per-atom quantity.
+
+Two other fixes are of particular note for output: "fix
+ave/time"_fix_ave_time.html and "fix
+ave/spatial"_fix_ave_spatial.html.
 
 The "fix ave/time"_fix_ave_time.html command enables time-averaging of
 global quantities like temperature or pressure.  The global quantities
 are calculated by a "compute"_compute.html or a "fix"_fix.html.  The
-compute or fix must generate global scalar or vector quantities.
+compute or fix must generate global scalar or vector quantities.  The
+time-averaged values generated by "fix ave/time"_fix_ave_time.html can
+be written directly to a file and/or accessed by the "thermo_style
+custom"_thermo_style.html command.
 
 The "fix ave/spatial"_fix_ave_spatial.html command enables
 spatial-averaging of per-atom quantities like per-atom energy or
@@ -890,6 +900,8 @@ compute or fix must generate per-atom scalar or vector quantities.
 Note that if you use the "fix ave/atom"_fix_ave_atom.html command with
 fix ave/spatial, it means you are effectively calculating a time
 average of a spatial average of a time-averaged per-atom quantity.
+The time-averaged values generated by "fix
+ave/spatial"_fix_ave_spatial.html are written directly to a file.
 
 :line
 
diff --git a/doc/fix_ave_time.html b/doc/fix_ave_time.html
index 66e7daf02a94b2598164824b438599c2ab8f8b97..8b7279438b5121dd03a991783c75f671083126e9 100644
--- a/doc/fix_ave_time.html
+++ b/doc/fix_ave_time.html
@@ -23,7 +23,7 @@
 <LI>style = <I>compute</I> or <I>fix</I>
 <LI>ID = ID of compute or fix that performs the calculation
 <LI>flag = 0 for scalar quantity, 1 for vector quantity, 2 for both
-<LI>file = filename to write results to 
+<LI>file = filename to write results to (NULL = no file) 
 </UL>
 <P><B>Examples:</B>
 </P>
@@ -33,12 +33,16 @@ fix 1 all ave/time 1 100 1000 fix indenter 0 temp.indent
 <P><B>Description:</B>
 </P>
 <P>Calculate one or more instantaneous quantities every few timesteps,
-average them over a longer timescale, and print the results to a file.
-This can be used to time-average a <A HREF = "compute.html">compute</A> which
+and average them over a longer timescale.  The resulting averages can
+be written to a file and/or used by other <A HREF = "Section_howto.html#4_15">output
+commands</A> such as <A HREF = "thermo_style.html">thermo_style
+custom</A>.
+</P>
+<P>This fix can be used to time-average a <A HREF = "compute.html">compute</A> which
 calculates a global quantity such as a temperature or pressure or a
-<A HREF = "fix.html">fix</A> which calculates such a global quantity.  Note that
-per-atom computes cannot be used with this fix; their values can be
-averaged by the <A HREF = "fix_ave_spatial.html">fix ave/spatial</A> or <A HREF = "fix_ave_atom.html">fix
+<A HREF = "fix.html">fix</A> which calculates a global quantity.  Note that per-atom
+computes cannot be used with this fix; their values can be averaged by
+the <A HREF = "fix_ave_spatial.html">fix ave/spatial</A> or <A HREF = "fix_ave_atom.html">fix
 ave/atom</A> commands.
 </P>
 <P>For style <I>compute</I> the <I>ID</I> specifies a <A HREF = "compute.html">compute</A> which
diff --git a/doc/fix_ave_time.txt b/doc/fix_ave_time.txt
index 7a1ce199d63539f2f6acc43da97ef43c704d85d5..defe27334f7fdea926f89982f40f944ab523bb40 100644
--- a/doc/fix_ave_time.txt
+++ b/doc/fix_ave_time.txt
@@ -20,7 +20,7 @@ Nfreq = timestep frequency at which the average value is written to file
 style = {compute} or {fix}
 ID = ID of compute or fix that performs the calculation
 flag = 0 for scalar quantity, 1 for vector quantity, 2 for both
-file = filename to write results to :ul
+file = filename to write results to (NULL = no file) :ul
 
 [Examples:]
 
@@ -30,12 +30,16 @@ fix 1 all ave/time 1 100 1000 fix indenter 0 temp.indent :pre
 [Description:]
 
 Calculate one or more instantaneous quantities every few timesteps,
-average them over a longer timescale, and print the results to a file.
-This can be used to time-average a "compute"_compute.html which
+and average them over a longer timescale.  The resulting averages can
+be written to a file and/or used by other "output
+commands"_Section_howto.html#4_15 such as "thermo_style
+custom"_thermo_style.html.
+
+This fix can be used to time-average a "compute"_compute.html which
 calculates a global quantity such as a temperature or pressure or a
-"fix"_fix.html which calculates such a global quantity.  Note that
-per-atom computes cannot be used with this fix; their values can be
-averaged by the "fix ave/spatial"_fix_ave_spatial.html or "fix
+"fix"_fix.html which calculates a global quantity.  Note that per-atom
+computes cannot be used with this fix; their values can be averaged by
+the "fix ave/spatial"_fix_ave_spatial.html or "fix
 ave/atom"_fix_ave_atom.html commands.
 
 For style {compute} the {ID} specifies a "compute"_compute.html which
diff --git a/doc/thermo_style.html b/doc/thermo_style.html
index 03d5fe493e07ea37acd90fc2cbff5ca2bcf318a9..86d7d46c1d14ae461d183a433aaad0a3642b720a 100644
--- a/doc/thermo_style.html
+++ b/doc/thermo_style.html
@@ -207,14 +207,16 @@ been defined elsewhere in the input script.  See the
 <A HREF = "compute.html">compute</A> command for details.  Note that only global
 scalar or vector quantites calculated by a compute can be output as
 thermodynamic data; per-atom quantities calcalated by a compute are
-output by the <A HREF = "dump.html">dump custom</A> command.  Note that some
-computes calculate "intensive" global quantities like temperature;
-others calculate "extensive" global quantities like kinetic energy
-that are summed over all atoms in the compute group.  Intensive
-quantities are printed directly by thermo_style custom.  Extensive
-quantites may be normalized by the total number of atoms in the
-simulation (NOT the number of atoms in the compute group) depending on
-the <A HREF = "thermo_modify.html">thermo_modify norm</A> option being used.
+output by the <A HREF = "dump.html">dump custom</A> command.
+</P>
+<P>Note that some computes calculate "intensive" global quantities like
+temperature; others calculate "extensive" global quantities like
+kinetic energy that are summed over all atoms in the compute group.
+Intensive quantities are printed directly by thermo_style custom.
+Extensive quantites may be normalized by the total number of atoms in
+the simulation (NOT the number of atoms in the compute group)
+depending on the <A HREF = "thermo_modify.html">thermo_modify norm</A> option being
+used.
 </P>
 <P>If <I>c_ID</I> is used as a keyword, then the scalar quantity calculated by
 the compute is printed.  If <I>c_ID[N]</I> is used, then the compute must
@@ -226,14 +228,20 @@ are.
 <P>The <I>f_ID</I> and <I>f_ID[N]</I> keywords allow global scalar or vector
 quantities calculated by a fix to be output.  The ID in the keyword
 should be replaced by the actual ID of the fix that has been defined
-elsewhere in the input script.  Note that some fixes calculate
-"intensive" global quantities like timestep size; others calculate
-"extensive" global quantities like energy that are summed over all
-atoms in the fix group.  Intensive quantities are printed directly by
-thermo_style custom.  Extensive quantites may be normalized by the
-total number of atoms in the simulation (NOT the number of atoms in
-the compute group) depending on the <A HREF = "thermo_modify.html">thermo_modify
-norm</A> option being used.
+elsewhere in the input script.  See the doc pages for individual <A HREF = "fix.html">fix
+commands</A> for details of which fixes generate global values.
+One particularly useful fix to use in this context is the <A HREF = "fix_ave_time.html">fix
+ave/time</A> command, which calculates time-averages of
+global scalar and vector quantities calculated by other
+<A HREF = "compute.html">computes</A> and <A HREF = "fix.html">fixes</A>.
+</P>
+<P>Note that some fixes calculate "intensive" global quantities like
+timestep size; others calculate "extensive" global quantities like
+energy that are summed over all atoms in the fix group.  Intensive
+quantities are printed directly by thermo_style custom.  Extensive
+quantites may be normalized by the total number of atoms in the
+simulation (NOT the number of atoms in the fix group) depending on the
+<A HREF = "thermo_modify.html">thermo_modify norm</A> option being used.
 </P>
 <P>If <I>f_ID</I> is used as a keyword, then the scalar quantity calculated by
 the fix is printed.  If <I>f_ID[N]</I> is used, then the fix must
diff --git a/doc/thermo_style.txt b/doc/thermo_style.txt
index 570b7d72c01ac3e3794c548614c41280bc6aa8f4..a282b4e14e27c8cb172361b5fc271857ff15286b 100644
--- a/doc/thermo_style.txt
+++ b/doc/thermo_style.txt
@@ -201,14 +201,16 @@ been defined elsewhere in the input script.  See the
 "compute"_compute.html command for details.  Note that only global
 scalar or vector quantites calculated by a compute can be output as
 thermodynamic data; per-atom quantities calcalated by a compute are
-output by the "dump custom"_dump.html command.  Note that some
-computes calculate "intensive" global quantities like temperature;
-others calculate "extensive" global quantities like kinetic energy
-that are summed over all atoms in the compute group.  Intensive
-quantities are printed directly by thermo_style custom.  Extensive
-quantites may be normalized by the total number of atoms in the
-simulation (NOT the number of atoms in the compute group) depending on
-the "thermo_modify norm"_thermo_modify.html option being used.
+output by the "dump custom"_dump.html command.
+
+Note that some computes calculate "intensive" global quantities like
+temperature; others calculate "extensive" global quantities like
+kinetic energy that are summed over all atoms in the compute group.
+Intensive quantities are printed directly by thermo_style custom.
+Extensive quantites may be normalized by the total number of atoms in
+the simulation (NOT the number of atoms in the compute group)
+depending on the "thermo_modify norm"_thermo_modify.html option being
+used.
 
 If {c_ID} is used as a keyword, then the scalar quantity calculated by
 the compute is printed.  If {c_ID\[N\]} is used, then the compute must
@@ -220,14 +222,20 @@ are.
 The {f_ID} and {f_ID\[N\]} keywords allow global scalar or vector
 quantities calculated by a fix to be output.  The ID in the keyword
 should be replaced by the actual ID of the fix that has been defined
-elsewhere in the input script.  Note that some fixes calculate
-"intensive" global quantities like timestep size; others calculate
-"extensive" global quantities like energy that are summed over all
-atoms in the fix group.  Intensive quantities are printed directly by
-thermo_style custom.  Extensive quantites may be normalized by the
-total number of atoms in the simulation (NOT the number of atoms in
-the compute group) depending on the "thermo_modify
-norm"_thermo_modify.html option being used.
+elsewhere in the input script.  See the doc pages for individual "fix
+commands"_fix.html for details of which fixes generate global values.
+One particularly useful fix to use in this context is the "fix
+ave/time"_fix_ave_time.html command, which calculates time-averages of
+global scalar and vector quantities calculated by other
+"computes"_compute.html and "fixes"_fix.html.
+
+Note that some fixes calculate "intensive" global quantities like
+timestep size; others calculate "extensive" global quantities like
+energy that are summed over all atoms in the fix group.  Intensive
+quantities are printed directly by thermo_style custom.  Extensive
+quantites may be normalized by the total number of atoms in the
+simulation (NOT the number of atoms in the fix group) depending on the
+"thermo_modify norm"_thermo_modify.html option being used.
 
 If {f_ID} is used as a keyword, then the scalar quantity calculated by
 the fix is printed.  If {f_ID\[N\]} is used, then the fix must
diff --git a/doc/timestep.html b/doc/timestep.html
index f28c99f7983072741f29b771024025ae8f73df54..4d6eca3bc969a21e4458130170fc2114a34240ad 100644
--- a/doc/timestep.html
+++ b/doc/timestep.html
@@ -36,7 +36,8 @@ the outer loop (largest) timestep.
 </P>
 <P><B>Related commands:</B>
 </P>
-<P><A HREF = "run.html">run</A>, <A HREF = "run_style.html">run_style</A> respa, <A HREF = "units.html">units</A>
+<P><A HREF = "fix_dt_reset.html">fix dt/reset</A>, <A HREF = "run.html">run</A>,
+<A HREF = "run_style.html">run_style</A> respa, <A HREF = "units.html">units</A>
 </P>
 <P><B>Default:</B>
 </P>
diff --git a/doc/timestep.txt b/doc/timestep.txt
index c028a9225d53f3d2dcd92d2a52417015c355feb1..a08f7b483cdc9429aa487b8d39d0c836f11b6047 100644
--- a/doc/timestep.txt
+++ b/doc/timestep.txt
@@ -33,7 +33,8 @@ the outer loop (largest) timestep.
 
 [Related commands:]
 
-"run"_run.html, "run_style"_run_style.html respa, "units"_units.html
+"fix dt/reset"_fix_dt_reset.html, "run"_run.html,
+"run_style"_run_style.html respa, "units"_units.html
 
 [Default:]