Flash swf format specification version 7
With the release of the new Flash Player 7 specification, it seems that alot of hidden information is now revealed to make our job easier.
Here's a glimspe of what's new.
New ActionScript bytecode ActionDefineFunction2 expands upon the existing ActionDefineFunction, now allowing a function to store parameters and local variables in registers. (The ActionDefineFunction bytecode is rarely used in SWF 7 and later and has been superseded by ActionDefineFunction2.) ActionDefineFunction2 also provides control over the creation and storage of common variables this, arguments, super, _root, _parent and _global.
New video format
Flash Player 7 supports a simple new lossless video codec called Screen Video Bitstream Format, optimized for captures of computer screens in motion. ScreenVideo, like Sorenson H.263 Bitstream Format, can appear in both SWF files and FLV
Runtime ActionScript controls
The new ScriptLimits tag provides control over the maximum recursion depth and the number of seconds before possible script time-
The new SetTabIndex tag sets the index of an object within the Flash Player tab order.ClipEventConstructThe ClipEventFlags sequence now includes ClipEventConstruct to signal the construct event, in addition to the already existing ClipEventInitialize.Small text renderingPreviously, in certain cases, small anti-aliased text would appear blurry in Flash Player. With the new flag FontFlagsSmallText in the DefineFontInfo, DefineFontInfo2, and DefineFont2 tags, Flash Player 7 and later aligns character glyphs on pixel boundaries for dynamic and input.
Download the SWF 7 Specification here
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