Alter Aeon Online Help

Keywords are:  'mage skill crystal focusing'

Skill: crystal focusing         Lvl 24 Mage  (28%)
                                (important)   Requires: crystal shield
                                Group: Mage crystal spellgroup

Usage:
channelcast <runeword> <spell> <target>
ccast <runeword> <spell> <target>

'Crystal focusing' allows channeled casting of certain mage crystal spells.