I still remember playing with one of the first versions of Macromedia Flash as an intern at an IT company during high school. The &quot;hot thing&quot; back then that people mostly used Flash for was to realize cool &quot;intro&quot; sequences for their website. As an example, here&#x27;s the intro that I made for my company (courtesy of the Wayback machine):<p><a href="https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20030605160730&#x2F;http:&#x2F;&#x2F;kimweb.de&#x2F;flashframe.htm" rel="nofollow">https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20030605160730&#x2F;http:&#x2F;&#x2F;kimweb.de&#x2F;...</a><p>Everything in Flash was pretty limited back then, for example Actionscript didn&#x27;t even have sine and cosine functions! I remember that for another project of mine I ended up re-implementing these functions using a Taylor series approximation, which was pretty wild but worked.<p>Today it seems that Flash gets a lot of hate and ridicule by the IT community, but honestly back in 2001 it was a huge deal and allowed you to do thing on the Web that were completely impossible using HTML&#x2F;CSS (Java applets were an alternative but much clunkier and harder to create). One example of this was a small thing that I built which would allow you to specify some text as a parameter and then would let this text &quot;fly in&quot; using user-defined animation sequences. For example, you could have the letters &quot;fly in&quot; from above or perform some wave-like dance. Creating these animations could be done by defining a sub-tween (I might misremember the name for this) for each letter, which would take the letter value and position and perform the rendering, which was quite flexible and allowed for object-oriented use of animation sequences. So, even back then Flash was a pretty decent and versatile tool and probably had a large influence on later technologies like HTML5.