22
22
Several levels are supported, and you can also register new factories such as
29
29
Produces no output and cannot take any input; useful for programs using
33
33
For use in testing; the input values to be returned are provided
37
37
Standard text command-line interface, with stdin, stdout, stderr.
38
38
May make more or less advanced use of them, eg in drawing progress bars,
39
39
depending on the detected capabilities of the terminal.