CLIC\IGNORE list_of_observations This command can be used to declare the specified list of Observations (from the input file) to be ignored in all FIND operations. They effec- tively become invisible to CLIC (except in a LIST IN command), until a FILE IN command is typed again. The input file is not physically modi- fied however. The list of observation can be given using the same for- mat as with a FOR command (e.g. n1 n2 n3 TO n4 BY n5 n6 TO n7).