In Spectacle, the rectangular region capture mode first instructs us to draw a rectangular region first. Is there currently a way to reuse the previous rectangular region then taking a new screenshot? Perhaps a new capture mode Previous Rectangular Region? That would save me a lot of time. Thanks in advance.

EDIT: never mind, found this bug https://bugs.kde.org/show_bug.cgi?id=366089 and read that this has been in implemented in KDE Application 16.04. You have to go to Settings and check [x] Remember Rectangular Region. Nice.