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The Status can be filtered using the radio buttons, while the ECL filter requires typing in a valid query using an improved version of SNOMED CT Expression Constraint Language that allows any kind of identifier to be used, not just SCT IDs. A content assist, which can be activated by pressing Ctrl + Space, helps users to construct ECL queries easily.
The ECL evaluation of non-SNOMED CT terminologies supports the following basic operators: =, <, <<, <!, ^, *, AND, OR, MINUS
