A new wood identification programme, CSIROID, has been developed to replace the commercial package CARDBOX-PLUS (R). The programme is interactive, completely self contained and is capable of running any suitable identification key using original features. Two-feature states are used and an allowance is made for variable and uncoded features. One unknown sample can be identified at a time. Maximum key size is 500,000 taxa (species) with 2000 features. All communication and data access is performed via pop-up window displays.