Canon EOS-1 DX Mark III Advanced User's Manual page 911

Group C
Autofocusing with 191 points is possible. All the AF area selection modes are selectable.
: Dual cross-type AF point. Offers superior subject tracking and higher focusing precision
than other AF points.
: Cross-type AF point. Offers excellent subject tracking and high-precision focusing.
: AF points sensitive to horizontal lines.
911