Flash Player 5.0 R30 -

The defining feature of Flash 5.0 was the introduction of . Based on the ECMAScript standard (the same foundation as JavaScript), this update replaced the "Actions" of previous versions with a legitimate programming language.

However, early builds of Flash 5 Player were notoriously buggy. Memory leaks were common. ActionScript’s onClipEvent handlers would sometimes fire erratically. This prompted Macromedia to roll out a series of "R" (Release) updates. was the most stable of these pre-6.0 releases. Flash Player 5.0 R30

A JavaScript-based language used to control movie clips and data. The defining feature of Flash 5