The following files can be used for changing the behaviour of a list. The filename is supposed to be below listdir/control. In the case it's a "boolean", the contents of a file does not matter, the mere presence of it, will set the variable to "true". If it's a "normal" file, the first line will be used as value, leaving line 2 and forward ready for commentary etc. If it's possible to specify several entries (one per line), it's marked "list".