Tool for creating files
cargo install fctool
fctool < {input file}
Examine this example input: Warning: all files referenced will be cleared ``` [a, "b"] This will be printed to files 'a' and 'b'
[c] This will be printed to file 'c'
[/] The above cancels the previous rule This will again be printed to files 'a', and 'b'
[+c -b] This will be printed to files 'a' and 'c' ```