diff --git "a/docs/10_\360\237\244\224_Why.md" "b/docs/10_\360\237\244\224_Why.md"
index d2ee7a3a673582b4ab002c99c5192b49ae360583..1ccbaa8641cbb0620b0db6d385fb1b9e24e39491 100644
--- "a/docs/10_\360\237\244\224_Why.md"
+++ "b/docs/10_\360\237\244\224_Why.md"
@@ -11,7 +11,9 @@ The init script:
 * sets permisssions for container and local user
 * generates needed files for docker from configuration and a set of templates
 * starts/ stops your container
+* opens a console
+* starts php lint
 
 # What problems does it not solve?
 
-It is a script for a dual container and Apache + PHP and Mariadb only. Nothing else.
+It is a script for a dual container and Apache + PHP and (optional) Mariadb only. Nothing else.
diff --git "a/docs/20_\342\234\205_Requirements.md" "b/docs/20_\342\234\205_Requirements.md"
index 39bc40e9e7d9fddf5ade47244e8f3de19ecdd751..6ce4b93939080f22960daa39b91db2494ab74d98 100644
--- "a/docs/20_\342\234\205_Requirements.md"
+++ "b/docs/20_\342\234\205_Requirements.md"
@@ -4,4 +4,4 @@ It was tested on Linux only.
 
 * Bash + GNU cure utilities
 * Docker Non-root installation - see <https://docs.docker.com/engine/security/rootless/>
-* ACL to enable write permissions on web data for Apache httpd in the container container and local user (you)
\ No newline at end of file
+* ACL to enable write permissions on web data for Apache httpd in the container container and local user (you)
diff --git "a/docs/50_\342\214\250\357\270\217_Usage.md" "b/docs/50_\342\214\250\357\270\217_Usage.md"
index ddd4ec174c946dfc49191a07ed8c96198a1a4211..fb448dc09224f954ffd3b0272ecf219727cbfcc8 100644
--- "a/docs/50_\342\214\250\357\270\217_Usage.md"
+++ "b/docs/50_\342\214\250\357\270\217_Usage.md"
@@ -12,7 +12,7 @@ There is a menu offerning a key and the description for its action. If an action
 The script supports command line parameters to use it in scripts. Use `-h` to get a help:
 
 ```txt
-INITIALIZER FOR DOCKER APP v1.9
+INITIALIZER FOR DOCKER APP v1.10
 
 A helper script written in Bash to bring up a PHP+Mysql application in docker.
 
@@ -49,6 +49,7 @@ MENU KEYS:
    m  - more infos
    o  - open app [my_new_app] http://localhost:8001/
    c  - console (bash)
+   p  - console check with php linter
 
    q  - quit
 
@@ -57,5 +58,77 @@ EXAMPLES:
   init.sh           starts interactive mode
   init.sh u         bring up docker container(s) and stay in interactive mode
   init.sh i q       set write permissions and quit
+  init.sh p q       start php linter and exit
 
-```
\ No newline at end of file
+```
+
+### Actions
+
+#### g - remove git data of starterkit
+
+After cloning the starter kit repo for a new project you don't want to commit project data to the starter kit but to your project.
+This feature removes the git directory if it is connected with the starter kit repository.
+If you initialized another project it will bedetected and this feature does nothing.
+
+#### i - init application: set permissions
+
+On a rootless docker setup you need to set the write permission for the `www-data` user and your current desktop user.
+
+#### t - generate files from templates
+
+Insite the docker/templates directory are templates. 
+
+**Rules**:
+
+* in the first line must be a line `# TARGET: [name of target file]` to define the target file
+* Placeholdrs have the syntax variable in double brackets, i.e. `{{VARNAME}}`
+* variables to be replaced are those in docker/init.sh.cfg and `{{genrator}}`
+
+This feature generates the files from the templates and puts them in the correct place.
+
+#### T - remove generated files
+
+This feature removes the files generated by the `t` action.
+
+#### u - startup containers    docker-compose ... up -d
+
+Fast start webserver container and database container (if enabled).
+
+#### U - startup containers    docker-compose ... up -d --build
+
+Build and start webserver container and database container (if enabled).
+
+#### s - shutdown containers   docker-compose stop
+
+Shut down your containers.
+
+#### r - remove containers     docker-compose rm -f
+
+Remove your containers.
+
+#### m - more infos
+
+Show processes.
+
+#### o - open app [my_new_app] http://localhost:NNNN/
+
+Start a browser and open the application.
+This feature uses the command `xdg-open` to run on Linux.
+
+#### c - console (bash)
+
+Open a console and start a Bash inside webserver container.
+
+If you have a database container too then you get a selection for the first.
+
+You need to type `exit` and press `Return` to return to the menu.
+
+#### p - console check with php linter
+
+Start a docker command on the webserver container and start php lint for all php files:
+
+`find . -name '*.php' -exec php -l {} \; | grep -v '^No syntax errors detected'`
+
+Starting from PHP 8.3 php -l supports multiple files. A newer PHP version will be detected to use the faster mode automatically:
+
+`php -l $( find . -name '*.php' ) | grep -v '^No syntax errors detected'`
\ No newline at end of file
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