The Casting Of The Circle:

In witchcraft the circle is used for several purposes, mainly though for containing enrgy and power raised and also to keep away any unwelcome or unwanted influences. The circle is a scared space shared with witches and is the boundary of a place "between the worlds" where witches meet "in perfect love and perfect trust". The circle is cast at the start of a ritual, sometimes by the priest and/or priestess alone and it can, if required, have a "doorway" ritually cut in it to allow someone to enter or leave later.

How it's done (this is a very elaborate way to do it, virtually guaranteed "belt and braces" wey to get the job done):

The athame is charged with the four elements:

(Touching pentacle) I call on earth to bind the spell
(Waved in the air) Air to speed its travel well
(Held in incense smoke) Bright as fire may it glow
(Dipped into the cup) Deep as tides of water flow
(Held upright) Charged by powers all four fold
In the fifth the circle hold

The circle is drawn 3 times deosil beginning in the east using blue visualised energy and then spinning bands of white light - sometimes salt is used to mark out the edge of the circle or just sprinkled around the boundary as the caster proceeds. The following chant can be used:

Spirits black, white, red and grey
Harken to this rune I say
Four points the circle weave the spell
East, South, West, North the tale to tell
East is red for break of day
South is white for noontide hour
In the west is twilight grey
The north is black, the place of power
Three times round the circle cast
Ancient spirits of the past
Witness it and guard it fast!