isOffset (direction = undefined) {
      if (!direction) {
        return this._o
      }

      if (!this._o) {
        return false
      }

      // did we view to the right?
      if (direction === '|>') {
        return this.move.direction === '|' && this.move.steps === '>'
      }

      // did we view to the left?
      if (direction === '|<') {
        return this.move.direction === '|' && this.move.steps === '<'
      }

      return this.move.direction === direction
    }
Checks if we are making a offset run.

@param {String} direction
@return {Boolean}