From Cubic Path

Purify with Water

Banish with Air
Consecrate with Fire

In ceremonial magick, the concept of Consecration usually encompasses the idea of purifying the local reality with the element of Fire. This also entails the establishment of the space as holy, segregating it from the material plane, and the dedication of the arena to a particular working or goal.

Example:
With Oil of Abramelin draw the circle squared (x) on the area to be consecrated.