gzdoom-gles/wadsrc/decorate/constants.txt

// Flags for A_CustomMissile
const int CMF_AIMOFFSET = 1;
const int CMF_AIMDIRECTION = 2;
const int CMF_TRACKOWNER = 4;
const int CMF_CHECKTARGETDEAD = 8;

// Flags for A_SpawnItemEx
const int SXF_TRANSFERTRANSLATION=1;
const int SXF_ABSOLUTEPOSITION=2;
const int SXF_ABSOLUTEANGLE=4;
const int SXF_ABSOLUTEMOMENTUM=8;
const int SXF_SETMASTER=16;