Below is a list of orienteering acronyms

AP –
DOMA – Digital Orienteering Map Archive
EVENTOR – Used by all international events that have World Ranking Event (WRE) competitions (as well as many other organizers) to run all signup and registration activities. Athletes can sign up for an account
IOF – International Orienteering Federation
ISCD – International Specification for Control Descriptions
ISOM – International Specification for Orienteering Maps
ISSprOM – International Specifications for Sprint Orienteering Maps (2019)
Lidar – Light detection and ranging
NRE – National ranking event
ONA – Orienteering North America magazine
OUSA – Orienteering USA, alternate to the legal name of the US Orienteering Federation
SI – SportIdent electronic timing system
USOF – United States Orienteering Federation, legal name of Orienteering USA
WRE – World ranking Event