Create a application starter in your tint2 panel

First install xdotool:

#pacman -S xdotool

Add this line in the keyboard section of your ~/.config/openbox/rc.xml

   root-menu
 

We do
$openbox --reconfigure
to update openbox menu
 Check if this works with
 $ xdotool key ctrl+alt+space
You should see the OB menu pop up near your mouse.

Now we install tint2-svn from AUR with yaourt or packer
$yaourt tint2-svn

After installing we edit the tint2rc by hand in /home/username/.configure/tint2
Under panel we add:
# Panel panel_items = LTSBC

 And we add a new section:
# Launchers
launcher_icon_theme =Adwaita
launcher_padding = 5 0 10
launcher_background_id = 9
launcher_icon_size = 85
launcher_item_app = /usr/share/applications/tint2.desktop

Now we are going to create the  tint2.desktop file in the folder  /usr/share/applications
Create a file nameit tint2.desktop and with leafpad add the text and save:

[Desktop Entry]
Categories=Panel
Comment=A menu launcher
Exec=xdotool key ctrl+alt+space
GenericName=tint2
Icon=tint2
MimeType=
Name=tint
Type=Application
X-KDE-StartupNotify=false


 Now we kill tint2 with
 $pkill tint2
 And activate it again with dmenu, alt-f3,type tint2 and enter.

If all is good you should see this:

Easiest way to change default boot order Grub2

Count on which line the desired default Os in your Grub boot menu.
Say it is on line 7.
Go to /etc/default/grub en open it with leafpad
#leafpad  /etc/default/grub
Change line GRUB_DEFAULT="0" to
GRUB_DEFAULT="6"

Why 6? Because counting starts with zero, 0.

Installing Sandfox in Void Linux

Update Sandfox is a  Void package now
Install with:
#xbps-install sandfox
 The second part Configuration and use of this post still is relevant.

I feel it is essential for your safety to run your browser in a sandbox.
I use sandfox for that.
Here is how I installed  Sandfox in Void Linux
First check if you have  what you need:

#xbps-install lsof inotify-tools wget

If this is OK, we can download it

$ wget https://github.com/IgnorantGuru/sandfox/raw/master/sandfox

This gave me a file called sandfox
Install with

$sudo install sandfox /usr/bin/sandfox

It should be executable ; if you encounter problems check this.

Configuration and use

Make a folder for your browser downloads, for example /home/user/sf_download
Enable this in your sandfox configuration by editing /etc/sandfox/firefox.profile; in the section home folders add a line with

bind=/home/$user/sf_download

Now you can create and start using the sandbox by doing:

$sudo  sandfox firefox

Avoid having to give your root password each time you start sandfox:
Add a line (change user name of course) in your sudoers file:

 paul ALL=(ALL) NOPASSWD: /usr/bin/sandfox

by doing

#EDITOR=nano visudo

and editing (nano commands: ctrl+o and enter to write and ctrl+x and enter to exit).

You can also add to your /home/paul/.bashrc the line:

alias firefox='sudo sandfox firefox'

For more options and scenarios see this link .