How to change color and blur for PopUpManager in MXML

Big problem in Flex application is default modal block display object. You can't change blur and color in PopUpManager Style, but you can in main Application set default modal properties:

modalTransparencyColor="#666666"

modalTransparency="0.7"

modalTransparencyBlur="0"

How to Add/Change Reflow property for PDF files

Reflow option need to be enabled if you want to read PDF files on small screens (smartphones, PDA-s, eBook readers etc). In most cases downloaded PDFs don't have setted this option, and you can't easy set that.
I found only one method:

First you need program FineReader. In that program than open your PDF file. Than you need to call Read all pages (this is procedure where FineReader goes through all pages and prepare texts and paragraphs):

When "reading" is finished, you can save your PDF. In save dialog pick pdf:

and in format setings check "enable tagged PDF".

And that's all. Wait some time and your new reflowed document is ready.

How to change 3D perspective (camera POV) in Actionscript 3

In Actionscript 3 for Flash CS4 (Flex SDK 3.2 or newer) Adobe added some new features for simple 3D DisplayObject manipulation. You can rotate display objects in 3D space, but if you need to add your component to other display container your 3D perspective probably will be changed. The biggest problem is that for all 3D views default camera position is center of main scene, not of your display object.

So if you need to specify concret position of camera just for your display object you need to specify PerspectiveProjection and set it to your transform property. This is code:

var perspective:PerspectiveProjection;
perspective = new PerspectiveProjection();
perspective.projectionCenter = new Point(400, 300);
transform.perspectiveProjection = perspective;