diff --git a/INSTALL b/INSTALL
index b677261..603b23b 100644
--- a/INSTALL
+++ b/INSTALL
@@ -296,38 +296,6 @@ You can specify 'stop-on-test-failure=y' when running 'make check' to
 make the test run stop and exit with an error status immediately when a
 failure occurs.
 
-   The GNU C Library pretty printers come with their own set of scripts
-for testing, which run together with the rest of the testsuite through
-'make check'.  These scripts require the following tools to run
-successfully:
-
-   * Python 2.7/3.4 or later
-
-     Python is required for running the printers' test scripts.  As of
-     release time, Python 3.6 is the newest verified to work to test the
-     pretty printers.
-
-   * PExpect 4.0
-
-     The printer tests drive GDB through test programs and compare its
-     output to the printers'.  PExpect is used to capture the output of
-     GDB, and should be compatible with the Python version in your
-     system.  As of release time PExpect 4.3 is the newest verified to
-     work to test the pretty printers.
-
-   * GDB 7.8 or later with support for Python 2.7/3.4 or later
-
-     GDB itself needs to be configured with Python support in order to
-     use the pretty printers.  Notice that your system having Python
-     available doesn't imply that GDB supports it, nor that your
-     system's Python and GDB's have the same version.  As of release
-     time GNU 'debugger' 8.0.1 is the newest verified to work to test
-     the pretty printers.
-
-If these tools are absent, the printer tests will report themselves as
-'UNSUPPORTED'.  Notice that some of the printer tests require the GNU C
-Library to be compiled with debugging symbols.
-
    To format the 'GNU C Library Reference Manual' for printing, type
 'make dvi'.  You need a working TeX installation to do this.  The
 distribution builds the on-line formatted version of the manual, as Info
@@ -532,10 +500,11 @@ build the GNU C Library:
 
    * Perl 5
 
-     Perl is not required, but it is used if present to test the
-     installation.  We may decide to use it elsewhere in the future.  As
-     of release time 'perl' version 5.28.0 is the newest verified to
-     work to build the GNU C Library.
+     Perl is not required, but if present it is used in some tests and
+     the 'mtrace' program, to build the GNU C Library manual, as well as
+     to regenerate 'locale/C-translit.h' if its source files are
+     modified.  As of release time 'perl' version 5.28.0 is the newest
+     verified to work to build the GNU C Library.
 
    * GNU 'sed' 3.02 or newer
 
@@ -543,6 +512,33 @@ build the GNU C Library:
      work with any version of 'sed'.  As of release time, 'sed' version
      4.5 is the newest verified to work to build the GNU C Library.
 
+   * Python 2.7/3.4 or later
+
+     Python is required to run some tests.  As of release time, Python
+     3.6 is the newest verified to work for testing the GNU C Library.
+
+   * PExpect 4.0
+
+     The pretty printer tests drive GDB through test programs and
+     compare its output to the printers'.  PExpect is used to capture
+     the output of GDB, and should be compatible with the Python version
+     in your system.  As of release time PExpect 4.3 is the newest
+     verified to work to test the pretty printers.
+
+   * GDB 7.8 or later with support for Python 2.7/3.4 or later
+
+     GDB itself needs to be configured with Python support in order to
+     use the pretty printers.  Notice that your system having Python
+     available doesn't imply that GDB supports it, nor that your
+     system's Python and GDB's have the same version.  As of release
+     time GNU 'debugger' 8.0.1 is the newest verified to work to test
+     the pretty printers.
+
+     Unless Python, PExpect and GDB with Python support are present, the
+     printer tests will report themselves as 'UNSUPPORTED'.  Notice that
+     some of the printer tests require the GNU C Library to be compiled
+     with debugging symbols.
+
 If you change any of the 'configure.ac' files you will also need
 
    * GNU 'autoconf' 2.69 (exactly)
diff --git a/manual/install.texi b/manual/install.texi
index f9cc190..df32b39 100644
--- a/manual/install.texi
+++ b/manual/install.texi
@@ -330,39 +330,6 @@ occurred.  You can specify @samp{stop-on-test-failure=y} when running
 @code{make check} to make the test run stop and exit with an error
 status immediately when a failure occurs.
 
-The @glibcadj{} pretty printers come with their own set of scripts for testing,
-which run together with the rest of the testsuite through @code{make check}.
-These scripts require the following tools to run successfully:
-
-@itemize @bullet
-@item
-Python 2.7/3.4 or later
-
-Python is required for running the printers' test scripts. As of release time,
-Python 3.6 is the newest verified to work to test the pretty printers.
-
-@item PExpect 4.0
-
-The printer tests drive GDB through test programs and compare its output
-to the printers'.  PExpect is used to capture the output of GDB, and should be
-compatible with the Python version in your system. As of release time
-PExpect 4.3 is the newest verified to work to test the pretty printers.
-
-@item
-GDB 7.8 or later with support for Python 2.7/3.4 or later
-
-GDB itself needs to be configured with Python support in order to use the
-pretty printers.  Notice that your system having Python available doesn't imply
-that GDB supports it, nor that your system's Python and GDB's have the same
-version. As of release time GNU @code{debugger} 8.0.1 is the newest verified
-to work to test the pretty printers.
-@end itemize
-
-@noindent
-If these tools are absent, the printer tests will report themselves as
-@code{UNSUPPORTED}.  Notice that some of the printer tests require @theglibc{}
-to be compiled with debugging symbols.
-
 To format the @cite{GNU C Library Reference Manual} for printing, type
 @w{@code{make dvi}}.  You need a working @TeX{} installation to do
 this.  The distribution builds the on-line formatted version of the
@@ -577,10 +544,11 @@ verified to work to build @theglibc{}.
 @item
 Perl 5
 
-Perl is not required, but it is used if present to test the
-installation.  We may decide to use it elsewhere in the future. As of release
-time @code{perl} version 5.28.0 is the newest verified to work to build
-@theglibc{}.
+Perl is not required, but if present it is used in some tests and the
+@code{mtrace} program, to build the @glibcadj{} manual, as well as to
+regenerate @file{locale/C-translit.h} if its source files are
+modified.  As of release time @code{perl} version 5.28.0 is the newest
+verified to work to build @theglibc{}.
 
 @item
 GNU @code{sed} 3.02 or newer
@@ -589,6 +557,33 @@ GNU @code{sed} 3.02 or newer
 with any version of @code{sed}.  As of release time, @code{sed} version
 4.5 is the newest verified to work to build @theglibc{}.
 
+@item
+Python 2.7/3.4 or later
+
+Python is required to run some tests.  As of release time, Python 3.6
+is the newest verified to work for testing @theglibc{}.
+
+@item PExpect 4.0
+
+The pretty printer tests drive GDB through test programs and compare
+its output to the printers'.  PExpect is used to capture the output of
+GDB, and should be compatible with the Python version in your system.
+As of release time PExpect 4.3 is the newest verified to work to test
+the pretty printers.
+
+@item
+GDB 7.8 or later with support for Python 2.7/3.4 or later
+
+GDB itself needs to be configured with Python support in order to use
+the pretty printers.  Notice that your system having Python available
+doesn't imply that GDB supports it, nor that your system's Python and
+GDB's have the same version.  As of release time GNU @code{debugger}
+8.0.1 is the newest verified to work to test the pretty printers.
+
+Unless Python, PExpect and GDB with Python support are present, the
+printer tests will report themselves as @code{UNSUPPORTED}.  Notice
+that some of the printer tests require @theglibc{} to be compiled with
+debugging symbols.
 @end itemize
 
 @noindent
