Resize each selected item from any anchor point (ctrl-shift-r)
Specify:
a number like 2.0 and it will resize each selected item from its center by 2x
a number plus "w" or "h" it will scale proportionally to that width or height from the item's center
Add any of "bl", "le", "tl", "to", "tr", "ri", "br", "bo" to resize from the item's bottomleft, left, topleft. top, topright, right, bottom right or bottom, instead
Other then the number having to be first, these can be in any order, with or without spaces
Note: Will remember most recently used values between sessions