Activates a device.
devSet(which=dev.next(), ...)
which
An index (numeric) or a label (character). If neither, then a label corresponding to the checksum of which as generated by digest is used.
numeric
character
digest
...
Not used.
Returns what dev.set() returns.
dev.set()
Henrik Bengtsson
devOff() and devDone(). Internally, dev.set() is used.
devOff
devDone