diff --git "a/docs/10_\360\237\244\224_Why.md" "b/docs/10_\360\237\244\224_Why.md"
index 1ccbaa8641cbb0620b0db6d385fb1b9e24e39491..0810c73afeb8ba9f82171d595e17bddf74c3ecc9 100644
--- "a/docs/10_\360\237\244\224_Why.md"
+++ "b/docs/10_\360\237\244\224_Why.md"
@@ -8,12 +8,13 @@ And to dockerfy exsiting projects quick and dirty. Sure copy & paste works, but
 
 The init script:
 
-* sets permisssions for container and local user
+* sets acl permisssions for container and local user
 * generates needed files for docker from configuration and a set of templates
-* starts/ stops your container
+* handles php projects with or without database container
+* starts/ stops your container(s)
 * opens a console
 * starts php lint
 
 # What problems does it not solve?
 
-It is a script for a dual container and Apache + PHP and (optional) Mariadb only. Nothing else.
+It is a script for a dual container and Apache + PHP and (optional) Mariadb only for a local LAMP dev environment. Nothing else.
diff --git "a/docs/40_\342\232\231\357\270\217_Configuration/10_init.sh.cfg.md" "b/docs/40_\342\232\231\357\270\217_Configuration/10_init.sh.cfg.md"
index d2eda1145370a3cc0218ed1c52361b2123d314cd..933f0e2d8d69918120551f243650c3db39667ccd 100644
--- "a/docs/40_\342\232\231\357\270\217_Configuration/10_init.sh.cfg.md"
+++ "b/docs/40_\342\232\231\357\270\217_Configuration/10_init.sh.cfg.md"
@@ -5,20 +5,33 @@ Its variables will be used by the templates. You can define your own additional
 
 ❗**It's a MUST to change this file.**
 
+(1)
 It is a MUST to change
 
-* APP_NAME
+* APP_NAME - the name of your application/ project (lowercase and without spaces)
 
+(2)
 You SHOULD change the portmappings in
 
-* APP_PORT
-* DB_PORT
+* APP_PORT - exposed tcp port for apache httpd
 
+(3)
+If you use mariadb then set this value to true:
+
+* DB_ADD=true
+
+Then the image for myriadb will be enabled in the generated docker compose file.
+
+* DB_PORT - exposed tcp port for mariadb
+
+(4)
 Check needed packages and modules in
 
 * APP_APT_PACKAGES
+* APP_APACHE_MODULES
 * APP_PHP_MODULES
 
+(5)
 You can change versions
 
 * APP_PHP_VERSION
@@ -31,7 +44,9 @@ You can change versions
 #
 # settings for init.sh and base values for replacements in template files
 # This script is sourced by init.sh ... this file is bash syntax
-# 
+#
+# DOCS: https://os-docs.iml.unibe.ch/docker-php-starterkit/Configuration/init.sh.cfg.html
+#
 # ----------------------------------------------------------------------
 # 2021-12-17  <axel.hahn@iml.unibe.ch>
 # ======================================================================
@@ -43,10 +58,11 @@ APP_PORT=8001
 
 APP_APT_PACKAGES="git unzip zip"
 
-#APP_APACHE_MODULES="rewrite"
-APP_APACHE_MODULES=""
+# headers is needed to set security headers.
+# APP_APACHE_MODULES="headers rewrite"
+APP_APACHE_MODULES="headers"
 
-APP_PHP_VERSION=8.1
+APP_PHP_VERSION=8.3
 # APP_PHP_MODULES="curl pdo_mysql mbstring xml zip xdebug"
 APP_PHP_MODULES="curl mbstring xml zip xdebug"
 
diff --git "a/docs/40_\342\232\231\357\270\217_Configuration/30_Apply_changes.md" "b/docs/40_\342\232\231\357\270\217_Configuration/30_Apply_changes.md"
new file mode 100644
index 0000000000000000000000000000000000000000..2b0973d6e3dfe7fd79222dd6e9ee9ed05c8a30e0
--- /dev/null
+++ "b/docs/40_\342\232\231\357\270\217_Configuration/30_Apply_changes.md"
@@ -0,0 +1,27 @@
+## How to apply changes?
+
+After changing a config or a template file below docker/templates/ you need to apply the changes.
+
+### Stop containers
+
+This step is necessary if your continers are currently running only.
+
+Start `docker/init.sh` and press `s`
+OR `docker/init.sh s q`
+
+### Generate new config
+
+Start `docker/init.sh` and press `t`
+OR `docker/init.sh t q`
+
+You see the changes per template and a changed configuration file will be saved.
+
+### Start containers
+
+Start `docker/init.sh` and press `u`
+OR `docker/init.sh u q`
+
+!!! info "INFO"
+    You can `docker/init.sh` and interactively press `s`, then `t` and finally `u`.
+    Or do it in a single command line with `docker/init.sh s t u q`
+