diff --git a/doc/userman/user-services.tex b/doc/userman/user-services.tex
index cc1f485ba93790d1588952824de815faa6ac469f..24aca42be20f94c4c5714a43cd1ca11ecbb66cc6 100644
--- a/doc/userman/user-services.tex
+++ b/doc/userman/user-services.tex
@@ -89,7 +89,7 @@ loading another project file.
 Options \optionuse{-}{help}, \optionuse{-}{verbose},
 \optionuse{-}{debug}\xspace(and 
 their corresponding plugin-specific counterpart) 
-as well as \optionuse{-}{quiet}\xspace and
+as well as \optionuse{-}{explain}, \optionuse{-}{quiet}\xspace and
 \optionuse{-}{unicode}\xspace are not saved on disk.
 
 \section{Dependencies between Analyses}
@@ -185,5 +185,5 @@ generates (resp. does not generate) a journal upon exiting the session.
 
 Modifications of options \optionuse{-}{help}, \optionuse{-}{verbose},
 \optionuse{-}{debug}\xspace (and their corresponding counterpart) as well as
-\optionuse{-}{quiet}\xspace and \optionuse{-}{unicode}\xspace are not written in
-the journal.
+\optionuse{-}{explain}, \optionuse{-}{quiet}\xspace and
+\optionuse{-}{unicode}\xspace are not written in the journal.
diff --git a/doc/userman/user-start.tex b/doc/userman/user-start.tex
index c90a579eeee645e3c8f9a1473db378e5c7d3c3ed..2fb137f37cb2bd8d0cbd8f32739e973cac502831 100644
--- a/doc/userman/user-start.tex
+++ b/doc/userman/user-start.tex
@@ -132,6 +132,10 @@ while \optiondef{-}{version} prints the \FramaC version only
 The options of the installed plug-ins are displayed by using either the
 option \texttt{-<plug-in shortname>-help} or \texttt{-<plug-in shortname>-h}.
 
+Finally, the option \optiondef{-}{explain} can be used to obtain information
+about some specific options of the kernel or of any installed plug-ins:
+it prints a help message for each other option given in the command line.
+
 \subsection{\FramaC Configuration}\label{sec:version}
 
 The complete configuration of \FramaC can be obtained with various options,
diff --git a/man/frama-c.1.md b/man/frama-c.1.md
index 319c04fc20a3670566a429c73c2393888942264f..fd594ab8978b16a1b826b39d655ce54c12cf4752 100644
--- a/man/frama-c.1.md
+++ b/man/frama-c.1.md
@@ -55,6 +55,9 @@ option which has the opposite effect.
 -kernel-help
 : prints the list of options recognized by Frama-C's kernel
 
+-explain
+: prints a help message for each other option given in the command line
+
 -verbose *n*
 : sets verbosity level. Defaults to 1.
 Setting it to 0 will output less progress messages.