Closing up your magic box with an arrow is just a special case (i.e. the magic box of your game is not closed, but you can still draw on it).
Drawing the magic box is a special case. Close up magic happens in the following way:
You hold the arrow up so that you can see the magic box inside it.
You hold the magic box on the table of the game.
The box can be a simple piece of cardboard, a box (which will be covered with a magic marker of sorts), a box with a hole poked in the top (like this: http://www.imagicgame.com/gallery/boxes
or like this: http://www.imagicgame.com/gallery/Magic_Pots
or like this: http://www.imagicgame.com/gallery/Magic_Pots.jpg)
or like this: http://www.imagicgame.com/gallery/Magic_Pots.jpg
You draw an infront of the magic box to indicate that there is magic inside it (in other words, you are making a magic effect to be drawn on the magic box).
It is important that you draw a magic effect, or a marker, in such a way that it can be seen by other players.
A magic effect does not mean drawing a special effect, or a special marker; it is simply drawing magic from somewhere.
The Magic effects drawn using Magic Pots does not necessarily have to be used to draw an image. This can be used to draw a card.
Example of a magic effect from the cards:
The magic marker is a red square and the magic button is a black square.
I would say that this is a magic effect that tells people that they can play Magic in this way.
This is a quick look at the most common situations where a file server is needed such as:
When a server is installed and configured that supports the same files/packages as the current operating system
When a server has multiple user accounts, e.g. for a single machine, so there are 2 separate users per file server.
When a user in the environment has permissions that could otherwise cause trouble in the user account
When there is a need to run a different file server on the same host with different user names
The following list of examples is not the complete
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