What does the command list in A4 primarily include?

The command list in A4 primarily includes "PHELP," which stands for "Protocol Help." This is a critical component within the Medical Priority Dispatch System (MPDS) that allows dispatchers to quickly access essential information about protocols in use. The PHELP command brings up a standardized list of protocols or provides immediate guidance on how to manage specific medical emergencies. This ensures that dispatchers can provide the best possible assistance to callers and responders by guiding them through protocols that are readily available at their fingertips.

In contrast, the other options do not accurately represent the primary focus of the A4 command list. Services guidelines and protocol comparisons may exist within the system but are not central to the A4 command's primary objective, which is to assist with immediate protocol-related needs. Emergency contacts also serve an important function but are not included in the command list of A4 as they pertain more to logistical support rather than operational protocol guidance in emergency call handling.