diff --git a/about/about-summary.de.tm b/about/about-summary.de.tm
index 5a623ae..b88ae87 100644
--- a/about/about-summary.de.tm
+++ b/about/about-summary.de.tm
@@ -10,7 +10,7 @@
   Version>|<cell|<TeXmacs-version>>>|<row|<cell|Unterstützte
   Systeme>|<cell|Most GNU/<name|Linux> systems>>|<row|<cell|Copyright>|<cell|<copyright>
   1998--2002 by Joris van der Hoeven >>|<row|<cell|Lizenz>|<cell|<hlink|GNU
-  General Public License|$TEXMACS_PATH/LICENSE>>>|<row|<cell|Webseiten>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|http://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|Kontakt>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|Postansschrift>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<abbr|Dr.>
+  General Public License|$TEXMACS_PATH/LICENSE>>>|<row|<cell|Webseiten>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|https://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|Kontakt>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|Postansschrift>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<abbr|Dr.>
   Joris van der Hoeven>>|<row|<cell|<abbr|Dépt.> de Mathématiques
   (<abbr|Bât.> 425)>>|<row|<cell|Université Paris-Sud>>|<row|<cell|91405
   Orsay Cedex>>|<row|<cell|France>>>>>>>>>>|Die wichtigsten Informationen zu
diff --git a/about/about-summary.en.tm b/about/about-summary.en.tm
index 5fd4ef2..34df960 100644
--- a/about/about-summary.en.tm
+++ b/about/about-summary.en.tm
@@ -12,7 +12,7 @@
   systems>|<cell|Most GNU/<name|Linux> systems>>|<row|<cell|Copyright>|<cell|<copyright>
   1998\U2019 by Joris van der Hoeven >>|<row|<cell|License>|<cell|<hlink|GNU
   General Public License|$TEXMACS_PATH/LICENSE>>>|<row|<cell|Web
-  sites>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|http://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|Contact>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|Regular
+  sites>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|https://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|Contact>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|Regular
   mail>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<abbr|Prof.>
   <abbr|dr.> Joris van der Hoeven>>|<row|<cell|Laboratoire d'informatique de
   l'École polytechnique>>|<row|<cell|LIX, UMR 7161 CNRS>>|<row|<cell|Campus
diff --git a/about/about-summary.es.tm b/about/about-summary.es.tm
index 4feed8b..e308353 100644
--- a/about/about-summary.es.tm
+++ b/about/about-summary.es.tm
@@ -11,7 +11,7 @@
   GNU/<name|Linux>>>|<row|<cell|Copyright>|<cell|<copyright> 1998--2002 por
   Joris van der Hoeven >>|<row|<cell|Licencia>|<cell|<hlink|Licencia Pública
   General GNU|$TEXMACS_PATH/LICENSE>>>|<row|<cell|Sitios
-  web>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|http://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|Contacto>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|Correo
+  web>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|https://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|Contacto>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|Correo
   regular>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<abbr|Dr.>
   Joris van der Hoeven>>|<row|<cell|<abbr|Dépt.> de Mathématiques
   (<abbr|Bât.> 425)>>|<row|<cell|Université Paris-Sud>>|<row|<cell|91405
diff --git a/about/about-summary.fr.tm b/about/about-summary.fr.tm
index 7bef7be..e2162a0 100644
--- a/about/about-summary.fr.tm
+++ b/about/about-summary.fr.tm
@@ -11,7 +11,7 @@
   GNU/<name|Linux>>>|<row|<cell|Droits d'auteur>|<cell|<copyright> 1998--2003
   de Joris van der Hoeven >>|<row|<cell|Licence>|<cell|<hlink|GNU General
   Public License|$TEXMACS_PATH/LICENSE>>>|<row|<cell|Sites
-  web>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|http://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|Contact>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|Adresse
+  web>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|https://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|Contact>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|Adresse
   officielle>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<abbr|Dr.>
   Joris van der Hoeven>>|<row|<cell|<abbr|Dépt.> de Mathématiques
   (<abbr|Bât.> 425)>>|<row|<cell|Université Paris-Sud>>|<row|<cell|91405
diff --git a/about/about-summary.it.tm b/about/about-summary.it.tm
index 3be3d46..b816d49 100644
--- a/about/about-summary.it.tm
+++ b/about/about-summary.it.tm
@@ -11,7 +11,7 @@
   GNU/<name|Linux>>>|<row|<cell|Copyright>|<cell|<copyright> 1998--2002 by
   Joris van der Hoeven >>|<row|<cell|Licenza>|<cell|<hlink|GNU General Public
   License|$TEXMACS_PATH/LICENSE>>>|<row|<cell|Siti
-  web>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|http://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|Contatti>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|Indirizzi>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<abbr|Dr.>
+  web>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|https://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|Contatti>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|Indirizzi>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<abbr|Dr.>
   Joris van der Hoeven>>|<row|<cell|<abbr|Dépt.> de Mathématiques
   (<abbr|Bât.> 425)>>|<row|<cell|Université Paris-Sud>>|<row|<cell|91405
   Orsay Cedex>>|<row|<cell|France>>>>>>>>>>| Sommario delle principali
diff --git a/about/about-summary.zh.tm b/about/about-summary.zh.tm
index 7076eb8..677584b 100644
--- a/about/about-summary.zh.tm
+++ b/about/about-summary.zh.tm
@@ -8,7 +8,7 @@
   <big-table|<descriptive-table|<tformat|<cwith|1|1|1|1|cell-row-span|1>|<cwith|1|1|1|1|cell-col-span|2>|<cwith|1|1|1|1|cell-halign|c>|<table|<row|<cell|GNU
   <TeXmacs>>|<cell|>>|<row|<cell|\<#5F53\>\<#524D\>\<#7248\>\<#672C\>>|<cell|<TeXmacs-version>>>|<row|<cell|SVN\<#7248\>\<#672C\>\<#53F7\>>|<cell|<TeXmacs-version-release|revision>>>|<row|<cell|\<#652F\>\<#6301\>\<#7684\>\<#7CFB\>\<#7EDF\>>|<cell|\<#5927\>\<#90E8\>\<#5206\>GNU/<name|Linux>\<#7CFB\>\<#7EDF\>>>|<row|<cell|\<#7248\>\<#6743\>>|<cell|<copyright>
   1998\U2019 by Joris van der Hoeven >>|<row|<cell|\<#8BB8\>\<#53EF\>\<#8BC1\>>|<cell|<hlink|GNU
-  General Public License|$TEXMACS_PATH/LICENSE>>>|<row|<cell|\<#9879\>\<#76EE\>\<#4E3B\>\<#9875\>>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|http://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|\<#8054\>\<#7CFB\>\<#6211\>\<#4EEC\>>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|\<#8054\>\<#7CFB\>\<#5730\>\<#5740\>>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<abbr|Prof.>
+  General Public License|$TEXMACS_PATH/LICENSE>>>|<row|<cell|\<#9879\>\<#76EE\>\<#4E3B\>\<#9875\>>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<verbatim|https://www.texmacs.org>>>|<row|<cell|<verbatim|http://www.gnu.org/software/texmacs>>>>>>>>|<row|<cell|\<#8054\>\<#7CFB\>\<#6211\>\<#4EEC\>>|<cell|<verbatim|contact@texmacs.org>>>|<row|<cell|\<#8054\>\<#7CFB\>\<#5730\>\<#5740\>>|<cell|<tabular|<tformat|<twith|table-valign|T>|<cwith|1|-1|1|-1|cell-lsep|0spc>|<cwith|1|-1|1|-1|cell-rsep|0spc>|<table|<row|<cell|<abbr|Prof.>
   <abbr|dr.> Joris van der Hoeven>>|<row|<cell|Laboratoire d'informatique de
   l'École polytechnique>>|<row|<cell|LIX, UMR 7161 CNRS>>|<row|<cell|Campus
   de l'École polytechnique>>|<row|<cell|1, rue Honoré d'Estienne
diff --git a/about/contribute/documentation/cvs.en.tm b/about/contribute/documentation/cvs.en.tm
index 2cc7452..71fecc7 100644
--- a/about/contribute/documentation/cvs.en.tm
+++ b/about/contribute/documentation/cvs.en.tm
@@ -9,7 +9,7 @@
   <verbatim|texmacs.org> using <name|SVN>. In order to contribute, you should
   first create an account as explained on
 
-  <verbatim| \ \ \ <hlink|http://www.texmacs.org/tmweb/download/svn.en.html|http://www.texmacs.org/tmweb/download/svn.en.html>>
+  <verbatim| \ \ \ <hlink|https://www.texmacs.org/tmweb/download/svn.en.html|https://www.texmacs.org/tmweb/download/svn.en.html>>
 
   In fact, SVN is not ideal for our documentation purpose, because it is not
   very dynamic. In the future, we plan to create a dedicated publication
diff --git a/about/contribute/translate/translate.de.tm b/about/contribute/translate/translate.de.tm
index 6863780..ff4aa7b 100644
--- a/about/contribute/translate/translate.de.tm
+++ b/about/contribute/translate/translate.de.tm
@@ -19,7 +19,7 @@
     ein. Sie möchten vielleicht Andrey Grozin's Wörterbuch-Werkzeug
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org/Data/dictool.py.gz
+      \ \ \ \ https://www.texmacs.org/Data/dictool.py.gz
     </verbatim>
 
     benutzen. Dazu muss Python installiert sein. Laden sie die Datei
diff --git a/about/contribute/translate/translate.en.tm b/about/contribute/translate/translate.en.tm
index 2cd17f4..a163ac1 100644
--- a/about/contribute/translate/translate.en.tm
+++ b/about/contribute/translate/translate.en.tm
@@ -20,7 +20,7 @@
     Grozin's dictionary tool at
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org/Data/dictool.py.gz
+      \ \ \ \ https://www.texmacs.org/Data/dictool.py.gz
     </verbatim>
 
     In order to use it, may sure that Python is installed on your system,
diff --git a/about/contribute/translate/translate.es.tm b/about/contribute/translate/translate.es.tm
index b8627df..3c9c52a 100644
--- a/about/contribute/translate/translate.es.tm
+++ b/about/contribute/translate/translate.es.tm
@@ -20,7 +20,7 @@
     herramienta de diccionario de Andrey Grozin en\ 
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org/Data/dictool.py.gz
+      \ \ \ \ https://www.texmacs.org/Data/dictool.py.gz
     </verbatim>
 
     A fin de usarla, esté seguro de que Python está instalado en su sistema,
diff --git a/about/contribute/translate/translate.fr.tm b/about/contribute/translate/translate.fr.tm
index b100799..0220a35 100644
--- a/about/contribute/translate/translate.fr.tm
+++ b/about/contribute/translate/translate.fr.tm
@@ -20,7 +20,7 @@
     Vous pouvez utiliser l'outil dictionnaire de Andrey Grozin :
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org/Data/dictool.py.gz
+      \ \ \ \ https://www.texmacs.org/Data/dictool.py.gz
     </verbatim>
 
     Pour l'utiliser, vous devez vous assurer que Python est installé sur
diff --git a/about/contribute/translate/translate.it.tm b/about/contribute/translate/translate.it.tm
index 3f3a953..54f09cb 100644
--- a/about/contribute/translate/translate.it.tm
+++ b/about/contribute/translate/translate.it.tm
@@ -22,7 +22,7 @@
     reperibile all'indirizzo
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org/Data/dictool.py.gz
+      \ \ \ \ https://www.texmacs.org/Data/dictool.py.gz
     </verbatim>
 
     Prima di utilizzare questo strumento assicurati che Python sia installato
diff --git a/about/projects/future.en.tm b/about/projects/future.en.tm
index 8240835..ee702ff 100644
--- a/about/projects/future.en.tm
+++ b/about/projects/future.en.tm
@@ -7,7 +7,7 @@
 
   There are many things that we would like to integrate in <TeXmacs>. On
   <hlink|<name|Savannah>|http://savannah.gnu.org/projects/texmacs/>, we
-  maintain a<nbsp>wish list with <hlink|suggestions|http://www.texmacs.org/tmweb/contact/wishes.en.html>
+  maintain a<nbsp>wish list with <hlink|suggestions|https://www.texmacs.org/tmweb/contact/wishes.en.html>
   by users and other detailed wanted features. Here follows an incomplete
   list of more general directions for future development, as on may 31, 2019.
 
diff --git a/about/welcome/first.de.tm b/about/welcome/first.de.tm
index fdb0f4e..ccd734c 100644
--- a/about/welcome/first.de.tm
+++ b/about/welcome/first.de.tm
@@ -18,7 +18,7 @@
     <apply|menu|Help> menu. At either one of the websites\ 
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org<format|next line>
+      \ \ \ \ https://www.texmacs.org<format|next line>
       \ \ \ http://www.gnu.org/software/texmacs
     </verbatim>
 
@@ -31,7 +31,7 @@
     <apply|TeXmacs> mailing lists: see\ 
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org/Web/Support.html<format|next line>
+      \ \ \ \ https://www.texmacs.org/Web/Support.html<format|next line>
       \ \ \ http://www.gnu.org/software/texmacs/Web/Support.html
     </verbatim>
 
diff --git a/about/welcome/first.en.tm b/about/welcome/first.en.tm
index fdb0f4e..ccd734c 100644
--- a/about/welcome/first.en.tm
+++ b/about/welcome/first.en.tm
@@ -18,7 +18,7 @@
     <apply|menu|Help> menu. At either one of the websites\ 
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org<format|next line>
+      \ \ \ \ https://www.texmacs.org<format|next line>
       \ \ \ http://www.gnu.org/software/texmacs
     </verbatim>
 
@@ -31,7 +31,7 @@
     <apply|TeXmacs> mailing lists: see\ 
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org/Web/Support.html<format|next line>
+      \ \ \ \ https://www.texmacs.org/Web/Support.html<format|next line>
       \ \ \ http://www.gnu.org/software/texmacs/Web/Support.html
     </verbatim>
 
diff --git a/about/welcome/first.es.tm b/about/welcome/first.es.tm
index 2ff8421..015088c 100644
--- a/about/welcome/first.es.tm
+++ b/about/welcome/first.es.tm
@@ -18,7 +18,7 @@
     menú <apply|menu|Help>. En cualquiera de estos sitios Web
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org<format|next line>
+      \ \ \ \ https://www.texmacs.org<format|next line>
       \ \ \ http://www.gnu.org/software/texmacs
     </verbatim>
 
@@ -31,7 +31,7 @@
     siguiente listas de correo de <apply|TeXmacs>: vea
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org/Web/Support.html<format|next line>
+      \ \ \ \ https://www.texmacs.org/Web/Support.html<format|next line>
       \ \ \ http://www.gnu.org/software/texmacs/Web/Support.html
     </verbatim>
 
diff --git a/about/welcome/first.fr.tm b/about/welcome/first.fr.tm
index abce7b8..290cdc2 100644
--- a/about/welcome/first.fr.tm
+++ b/about/welcome/first.fr.tm
@@ -19,7 +19,7 @@
     les sites suivants :\ 
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org<format|next line>
+      \ \ \ \ https://www.texmacs.org<format|next line>
       \ \ \ http://www.gnu.org/software/texmacs
     </verbatim>
 
@@ -32,7 +32,7 @@
     de diffusion <apply|TeXmacs> :
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org/Web/Support.html<format|next line>
+      \ \ \ \ https://www.texmacs.org/Web/Support.html<format|next line>
       \ \ \ http://www.gnu.org/software/texmacs/Web/Support.html
     </verbatim>
 
diff --git a/about/welcome/first.it.tm b/about/welcome/first.it.tm
index 81acf4c..0acc7e2 100644
--- a/about/welcome/first.it.tm
+++ b/about/welcome/first.it.tm
@@ -19,7 +19,7 @@
     ciascuno dei seguenti siti web:\ 
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org<format|next line>
+      \ \ \ \ https://www.texmacs.org<format|next line>
       \ \ \ http://www.gnu.org/software/texmacs
     </verbatim>
 
@@ -32,7 +32,7 @@
     mailing list in cui si discute di <apply|TeXmacs>:\ 
 
     <\verbatim>
-      \ \ \ \ http://www.texmacs.org/Web/Support.html<format|next line>
+      \ \ \ \ https://www.texmacs.org/Web/Support.html<format|next line>
       \ \ \ http://www.gnu.org/software/texmacs/Web/Support.html
     </verbatim>
 
diff --git a/about/welcome/new-welcome.en.tm b/about/welcome/new-welcome.en.tm
index 5226d63..0a814cf 100644
--- a/about/welcome/new-welcome.en.tm
+++ b/about/welcome/new-welcome.en.tm
@@ -11,7 +11,7 @@
   <\wide-tabular>
     <tformat|<cwith|1|1|1|1|cell-hyphen|n>|<cwith|6|6|1|1|cell-hyphen|n>|<cwith|3|3|1|1|cell-hyphen|n>|<cwith|4|4|1|1|cell-hyphen|n>|<cwith|1|-1|1|-1|cell-valign|t>|<cwith|1|-1|1|1|cell-halign|r>|<cwith|1|-1|1|-1|cell-bsep|1em>|<cwith|6|6|1|-1|cell-bsep|0em>|<cwith|1|-1|1|1|cell-rsep|2spc>|<cwith|1|1|1|-1|cell-tsep|1em>|<cwith|2|2|1|1|cell-hyphen|n>|<cwith|2|2|1|2|cell-valign|t>|<cwith|2|2|1|1|cell-halign|r>|<cwith|2|2|1|2|cell-bsep|1em>|<cwith|2|2|1|1|cell-rsep|2spc>|<table|<row|<cell|<image|../../../misc/images/welcome-videos.png||2.2em||>>|<\cell>
       On our website <slink|https://www.texmacs.org>, you may find several
-      <hlink|videos|http://www.texmacs.org/tmweb/home/videos.en.html> to get
+      <hlink|videos|https://www.texmacs.org/tmweb/home/videos.en.html> to get
       you started: typing your first article, mathematical formulas,
       structured text editing, tables, laptop presentations, etc.
     </cell>>|<row|<cell|<image|../../../misc/images/The_Jolly_Writer.png||2.2em||>
@@ -23,9 +23,9 @@
     >|<\cell>
       The <TeXmacs> user manual can be browsed via the <menu|Help|Manual>
       menu or <hlink|downloaded in<nbsp><name|Pdf>
-      format|http://www.texmacs.org/tmweb/help/book.en.html> from our
+      format|https://www.texmacs.org/tmweb/help/book.en.html> from our
       website. Our website also offers several
-      <hlink|tutorials|http://www.texmacs.org/tmweb/help/tutorial.en.html>.
+      <hlink|tutorials|https://www.texmacs.org/tmweb/help/tutorial.en.html>.
     </cell>>|<row|<cell|<image|../../../misc/images/welcome-help.png||2.2em||>>|<\cell>
       You may use <shortcut|(interactive docgrep-in-doc)> to search for words
       in the integrated documentation. The <icon|tm_focus_help_x4.png> icon
@@ -34,7 +34,7 @@
       <image|../../../misc/images/welcome-email.png||2.2em||>
     </cell>|<\cell>
       Further questions? Do not hesitate to
-      <hlink|subscribe|http://www.texmacs.org/tmweb/home/ml.en.html#tmusers>
+      <hlink|subscribe|https://www.texmacs.org/tmweb/home/ml.en.html#tmusers>
       to the <verbatim|texmacs-users@texmacs.org> mailing list and post your
       questions there. You may also browse the <hlink|list
       archives|https://lists.texmacs.org/wws/arc/texmacs-users>.
@@ -42,8 +42,8 @@
     >|<\cell>
       If you like the program, then you can also help us! Please cite
       <TeXmacs> in your work using the <icon|tm_like_x4.png> icon on the
-      third toolbar. You may also <hlink|donate|http://www.texmacs.org/tmweb/contribute/donations.en.html>
-      money or <hlink|join|http://www.texmacs.org/tmweb/contribute/contribute.en.html>
+      third toolbar. You may also <hlink|donate|https://www.texmacs.org/tmweb/contribute/donations.en.html>
+      money or <hlink|join|https://www.texmacs.org/tmweb/contribute/contribute.en.html>
       the team of developers.
     </cell>>>>
   </wide-tabular>
diff --git a/about/welcome/new-welcome.fr.tm b/about/welcome/new-welcome.fr.tm
index 54760da..0592132 100644
--- a/about/welcome/new-welcome.fr.tm
+++ b/about/welcome/new-welcome.fr.tm
@@ -11,16 +11,16 @@
   <\wide-tabular>
     <tformat|<cwith|1|1|1|1|cell-hyphen|n>|<cwith|5|5|1|1|cell-hyphen|n>|<cwith|2|2|1|1|cell-hyphen|n>|<cwith|3|3|1|1|cell-hyphen|n>|<cwith|1|-1|1|-1|cell-valign|t>|<cwith|1|-1|1|1|cell-halign|r>|<cwith|1|-1|1|-1|cell-bsep|1em>|<cwith|5|5|1|-1|cell-bsep|0em>|<cwith|1|-1|1|1|cell-rsep|2spc>|<cwith|1|1|1|-1|cell-tsep|1em>|<table|<row|<cell|<image|../../../misc/images/welcome-videos.png||2.2em||>>|<\cell>
       Sur notre site <slink|https://www.texmacs.org>, vous pouvez trouver
-      plusieurs <hlink|vidéos|http://www.texmacs.org/tmweb/home/videos.en.html><nbsp>:
+      plusieurs <hlink|vidéos|https://www.texmacs.org/tmweb/home/videos.en.html><nbsp>:
       comment taper votre premier article, des formules mathématiques, des
       documents structurés, des tableaux, des présentations sur ordinateur,
       etc.
     </cell>>|<row|<cell|<image|../../../misc/images/welcome-manual.png||2.2em||>
     >|<\cell>
       Le guide de l'utilisateur <TeXmacs> peut être parcouru via le menu
-      <menu|Help|Manual> ou <hlink|téléchargé|http://www.texmacs.org/tmweb/help/book.en.html>
+      <menu|Help|Manual> ou <hlink|téléchargé|https://www.texmacs.org/tmweb/help/book.en.html>
       sous forme de document<nbsp><name|Pdf> depuis notre site. Notre site
-      fournit aussi plusieurs <hlink|tutoriels|http://www.texmacs.org/tmweb/help/tutorial.en.html>.
+      fournit aussi plusieurs <hlink|tutoriels|https://www.texmacs.org/tmweb/help/tutorial.en.html>.
     </cell>>|<row|<cell|<image|../../../misc/images/welcome-help.png||2.2em||>>|<\cell>
       La touche <shortcut|(interactive docgrep-in-doc)> permet de chercher
       des mots clefs dans la documentation intégrée.
@@ -30,7 +30,7 @@
       <image|../../../misc/images/welcome-email.png||2.2em||>
     </cell>|<\cell>
       D'autres questions ? N'hésitez pas à vous
-      <hlink|abonner|http://www.texmacs.org/tmweb/home/ml.en.html#tmusers> à
+      <hlink|abonner|https://www.texmacs.org/tmweb/home/ml.en.html#tmusers> à
       notre liste de diffusion <verbatim|texmacs-users@texmacs.org> pour
       poser vos questions. Vous pouvez aussi parcourir les
       <hlink|archives|https://lists.texmacs.org/wws/arc/texmacs-users> de
@@ -40,8 +40,8 @@
       Si vous aimez le programme, alors vous pouvez nous aider ! Merci de
       toujours citer <TeXmacs> dans vos travaux utilisant l'icône
       <icon|tm_like_x4.png> sur la troisième barre d'outils. Il est aussi
-      possible de nous faire des <hlink|donations|http://www.texmacs.org/tmweb/contribute/donations.en.html>
-      ou de <hlink|joindre|http://www.texmacs.org/tmweb/contribute/contribute.en.html>
+      possible de nous faire des <hlink|donations|https://www.texmacs.org/tmweb/contribute/donations.en.html>
+      ou de <hlink|joindre|https://www.texmacs.org/tmweb/contribute/contribute.en.html>
       l'équipe des développeurs.
     </cell>>>>
   </wide-tabular>
diff --git a/devel/format/environment/env-par.en.tm b/devel/format/environment/env-par.en.tm
index 25e04f8..cdd488f 100644
--- a/devel/format/environment/env-par.en.tm
+++ b/devel/format/environment/env-par.en.tm
@@ -58,13 +58,13 @@
       <\quote-env>
         <block|<tformat|<twith|table-width|1par>|<cwith|1|-1|1|-1|cell-hyphen|t>|<table|<row|<\cell>
           For certain paragraphs with wide unbreakable pieces of text, such
-          as the hyperlink <rigid|<href|http://www.texmacs.org>> it is
+          as the hyperlink <rigid|<href|https://www.texmacs.org>> it is
           sometimes preferrable to switch from justified to left aligned text
           when the spacing between words becomes to wide.
         </cell>|<\cell>
           <\with|par-flexibility|2.0>
             For certain paragraphs with wide unbreakable pieces of text, such
-            as the hyperlink <rigid|<href|http://www.texmacs.org>> it is
+            as the hyperlink <rigid|<href|https://www.texmacs.org>> it is
             sometimes preferrable to switch from justified to left aligned
             text when the spacing between words becomes to wide.
           </with>
diff --git a/main/faq/faq.en.tm b/main/faq/faq.en.tm
index bb33fcb..70c9d00 100644
--- a/main/faq/faq.en.tm
+++ b/main/faq/faq.en.tm
@@ -119,7 +119,7 @@
 
       <item>lets you export your documents to PS and PDF and offers both
       import and export to HTML, <LaTeX>, Scheme, Verbatim and Xml. We would
-      very much appreciate your <hlink|help|http://www.texmacs.org/Web/Contribute.html>
+      very much appreciate your <hlink|help|https://www.texmacs.org/Web/Contribute.html>
       for writing and improving converters for <TeXmacs> documents.
     </itemize-dot>
   </answer*>
diff --git a/main/faq/faq.zh.tm b/main/faq/faq.zh.tm
index 104d987..2f62f91 100644
--- a/main/faq/faq.zh.tm
+++ b/main/faq/faq.zh.tm
@@ -119,7 +119,7 @@
 
       <item>lets you export your documents to PS and PDF and offers both
       import and export to HTML, <LaTeX>, Scheme, Verbatim and Xml. We would
-      very much appreciate your <hlink|help|http://www.texmacs.org/Web/Contribute.html>
+      very much appreciate your <hlink|help|https://www.texmacs.org/Web/Contribute.html>
       for writing and improving converters for <TeXmacs> documents.
     </itemize-dot>
   </answer>