Often, the name of Christ is written on each side of the halo, as IC and XC. Christ's fingers are depicted in a pose that represents the letters IC, X and C, thereby making the Christogram "ICXC" (for "Jesus Christ"). The IC is composed of the Greek characters iota (Ι) and lunate sigma (C; instead of Σ, ς)—the first and last letters of 'Jesus' in Greek (); in XC the letters are chi (Χ) and again the lunate sigma—the first and last letters of 'Christ' in Greek ().