diff --git a/doc/Section_howto.html b/doc/Section_howto.html
index 8697114b5f..f5f61a065d 100644
--- a/doc/Section_howto.html
+++ b/doc/Section_howto.html
@@ -805,11 +805,10 @@ at a specified frequency.  A simulation prints one set of
 thermodynamic output; it may generate zero, or one, or multiple dump
 files.  LAMMPS gives you a variety of ways to determine what
 quantities are computed and printed when thermodynamic info or dump
-files are output.  There are also two fixes which perform time and
-spatial averaging of user-defined quantities, <A HREF = "fix_ave_time.html">fix
-ave/time</A> and <A HREF = "fix_ave_spatial.html">fix
-ave/spatial</A>.  These produce their own output
-files and are described below.
+files are output.  There are also three fixes which do their own
+output of user-defined quantities: <A HREF = "fix_ave_time.html">fix ave/time</A>
+for time averaging, <A HREF = "fix_ave_spatial.html">fix ave/spatial</A> for spatial
+averaging, and <A HREF = "fix_print.html">fix print</A>.  These are described below.
 </P>
 <P>The frequency and format of thermodynamic output is set by the
 <A HREF = "thermo.html">thermo</A>, <A HREF = "thermo_style.html">thermo_style</A>, and
@@ -887,9 +886,9 @@ These per-atom fix values are accessed by the <A HREF = "dump.html">dump custom<
 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>Three other fixes are of particular note for output: <A HREF = "fix_ave_time.html">fix
+ave/time</A>, <A HREF = "fix_ave_spatial.html">fix ave/spatial</A>,
+and <A HREF = "fix_print.html">fix print</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
@@ -910,6 +909,13 @@ 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>
+<P>The <A HREF = "fix_print.html">fix print</A> command can generate a line of output
+written to the screen and log file periodically during a running
+simulation.  Since the line can contain one or more
+<A HREF = "variable.html">variable</A> quantities, this command is a means to output
+desired calculated quantities that are not part of thermodynamic or
+dump file output.
+</P>
 <HR>
 
 <A NAME = "Cornell"></A>
diff --git a/doc/Section_howto.txt b/doc/Section_howto.txt
index 362aa72414..3028f5e39a 100644
--- a/doc/Section_howto.txt
+++ b/doc/Section_howto.txt
@@ -798,11 +798,10 @@ at a specified frequency.  A simulation prints one set of
 thermodynamic output; it may generate zero, or one, or multiple dump
 files.  LAMMPS gives you a variety of ways to determine what
 quantities are computed and printed when thermodynamic info or dump
-files are output.  There are also two fixes which perform time and
-spatial averaging of user-defined quantities, "fix
-ave/time"_fix_ave_time.html and "fix
-ave/spatial"_fix_ave_spatial.html.  These produce their own output
-files and are described below.
+files are output.  There are also three fixes which do their own
+output of user-defined quantities: "fix ave/time"_fix_ave_time.html
+for time averaging, "fix ave/spatial"_fix_ave_spatial.html for spatial
+averaging, and "fix print"_fix_print.html.  These are described below.
 
 The frequency and format of thermodynamic output is set by the
 "thermo"_thermo.html, "thermo_style"_thermo_style.html, and
@@ -880,9 +879,9 @@ 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.
+Three other fixes are of particular note for output: "fix
+ave/time"_fix_ave_time.html, "fix ave/spatial"_fix_ave_spatial.html,
+and "fix print"_fix_print.html.
 
 The "fix ave/time"_fix_ave_time.html command enables time-averaging of
 global quantities like temperature or pressure.  The global quantities
@@ -903,6 +902,13 @@ 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.
 
+The "fix print"_fix_print.html command can generate a line of output
+written to the screen and log file periodically during a running
+simulation.  Since the line can contain one or more
+"variable"_variable.html quantities, this command is a means to output
+desired calculated quantities that are not part of thermodynamic or
+dump file output.
+
 :line
 
 :link(Cornell)