The Tips - Mac Kung Fu - page 288

Adding a Spacer Between App Icons
To add any number of spacers to the side of the Dock containing the applica-
tion icons, open a Terminal window (open Finder, select the Applications list,
and then in the list of applications double-click Terminal within the UTILITIES
folder), and type the following two lines:
DEFAULTS WRITE COM.APPLE.DOCK PERSISTENT-APPS -ARRAY-ADD '{TILE-DATA={};
TILE-TYPE="SPACER-TILE";}';KILLALL DOCK
The new spacer will appear alongside the app icons. Repeat for more spacers.
You can click and drag each spacer to where you want it to go. To get rid of
it, just click and drag it off the Dock to the top half of the screen (bear in mind
that because the spacer is invisible, it will look like you're not dragging any-
thing!). It will disappear upon releasing the mouse button.
Adding a Spacer Near the Stacks/Trash
To add a similar spacer to the side of the Dock containing the trash and stacks
(or any number of spacers), open a Terminal window, and type the following
two lines:
DEFAULTS WRITE COM.APPLE.DOCK PERSISTENT-OTHERS -ARRAY-ADD '{TILE-DATA={};
TILE-TYPE="SPACER-TILE";}';KILLALL DOCK
The new spacer will appear beside the trash, and again you can click and
drag it to where you'd like it to go. Click and drag it off the Dock to the top
half the screen to dispose of it (again bear in mind that because the spacer
is invisible, it will look like you're not dragging anything!).
Tip 265
Work with Background Windows
Often you might find yourself transferring information from one program
window to another—from a browser window to a text editor, for example. Here
are some tips to make that easier.
Repositioning Windows
Repositioning program windows in such a situation can be annoying, because
each must be selected and then repositioned before you return to the window
you're working in—that's a lot of clicking around!