OUT
BOTH selects the file to be opened
for input/output. These commands also read the input or output file
index, and copy a subset of it in memory so that subsequent index
searches can proceed even more efficiently. The logic is the same as
CLASS . If the argument BOTH is used, the same file is opened
for input and output. Internally, CLIC deals with two write mode for
files: NEW and UPDATE. The logic is that if the
input file and output file are different, the output file is in
NEW mode, whereas if the same file is opened for input and
output, the output file is in UPDATE mode.
The files opened for input and output are displayed with SHOW FILE.