The structure of a submission's subject line is now specified as:
mode [-d engine [engine] ...] [-e engine [engine] ...]

where mode is either "static" or "kinematic", as normal

-d disable: disable any number of named engines

-e enable: restrict to named engines only (overrides -d)

Engine names are case-insensitive and specified as:
APPS (temporarily out of order)
GAPS
NRCan
magicGNSS