diff --git a/doc/texinfo/opt_plugin.texi b/doc/texinfo/opt_plugin.texi
index 3c3f73d7fdf7c56b565f4b0c39c33987275063e2..ea5d2caa9430a32059366df69aaacce298da261b 100644
--- a/doc/texinfo/opt_plugin.texi
+++ b/doc/texinfo/opt_plugin.texi
@@ -218,8 +218,10 @@ mathematical functions (Exp, Log, Sqrt, Sin,
 Cos, Fabs, etc.) and operators (+, -, *, /, ^),
 the expressions can contain the symbols v0,
 v1, v2, ..., vn, which represent the n
-components of the field. If `iView' < 0, the
-plugin is run on the current view.
+components of the field, and the symbols x, y
+and z, which represent the three spatial
+coordinates. If `iView' < 0, the plugin is
+run on the current view.
 
 Plugin(Extract) creates one new view.
 
@@ -350,7 +352,6 @@ Default value: @code{-1}
 Default value: @code{-1}
 @end table
 
-
 @item Plugin(Transform)
 Plugin(Transform) transforms the coordinates of
 the nodes of the view `iView' by the matrix
diff --git a/doc/texinfo/opt_post.texi b/doc/texinfo/opt_post.texi
index 2ef592daa315aea41b050a99c54e0f602c36dffa..093baf278225ff65e53463b0953c20c4826ae8cb 100644
--- a/doc/texinfo/opt_post.texi
+++ b/doc/texinfo/opt_post.texi
@@ -34,6 +34,11 @@ Current number of views merged@*
 Default value: @code{0}@*
 Saved in: @code{-}
 
+@item PostProcessing.Plugins
+Enable default post-processing plugins?@*
+Default value: @code{1}@*
+Saved in: @code{General.OptionsFileName}
+
 @item PostProcessing.Scales
 Show value scales@*
 Default value: @code{1}@*
diff --git a/doc/texinfo/opt_solver.texi b/doc/texinfo/opt_solver.texi
index 92b06daeff3414dfd0c15cbaf0576b888dc3f600..165838136279d45c39a1b270f3e0147dcf4a00ee 100644
--- a/doc/texinfo/opt_solver.texi
+++ b/doc/texinfo/opt_solver.texi
@@ -608,6 +608,11 @@ Maximum delay allowed for solver response (in seconds)@*
 Default value: @code{4}@*
 Saved in: @code{General.OptionsFileName}
 
+@item Solver.Plugins
+Enable default solver plugins?@*
+Default value: @code{0}@*
+Saved in: @code{General.OptionsFileName}
+
 @item Solver.ClientServer0
 Connect solver 0 to the Gmsh server@*
 Default value: @code{1}@*