https://www.legislation.gov.au/Details/F2005C00327
Speeds:
V1 means the take-off decision speed;
V1 (wet) means a reduced V1 established for use on a wet or contaminated runway;
V2 means the initial climb out speed which is not less than the take-off safety speed;
VR means the speed at which aeroplane rotation is initiated by the pilot during take-off;
VS means the minimum speed in a stall or the minimum steady flight speed.