[NanoC]

Exactly

Spoiler

    MarkNativeAsOptional("ZR_IsValidClassIndex");
    MarkNativeAsOptional("ZR_GetActiveClass");
    MarkNativeAsOptional("ZR_SelectClientClass");
    MarkNativeAsOptional("ZR_GetClassByName");
    MarkNativeAsOptional("ZR_GetClassDisplayName");

    MarkNativeAsOptional("ZR_IsClientZombie");
    MarkNativeAsOptional("ZR_IsClientHuman");
    MarkNativeAsOptional("ZR_InfectClient");
    MarkNativeAsOptional("ZR_HumanClient");

    MarkNativeAsOptional("ZR_RespawnClient");
    MarkNativeAsOptional("ZR_SetKilledByWorld");
    MarkNativeAsOptional("ZR_GetKilledByWorld");