Tomado de theSaj Blog : The following are some tips, tricks, and little nuggets within Flex Builder. NOTE - some of these tips only work in Flex 3 Beta. I. Code Hinting: CNTRL-SPACE pops up coding hint-menu. (Most of the time!) ﾠ II. Find Closing Bracket: CNTRL-SHIFT-P or APPLE-SHIFT-P toggles cursor between the first “{” and the corresponding closing “}” when editing ActionScript code. III. Moving a Block of Code Highlight or click a line or lines - hold the ALT key down while moving the up/down arrows. This will shift the code block up or down respectively. This is very useful for relocating code blocks. IV. Highlight All Instances in Code Step 1: Highlight an instance in ActionScript. Step 2: Click on the “Mark Occurences” icon. Step 3: The result is all instances are highlighted. V. Auto Comment ActionScript CNTRL + “/” or Apple + “/” = auto comment all highlighted/selected lines. VI. Compare History of File Changes: this is a pretty nifty and powerful feature tha