What do the object code in the html page mean?

programming flash
1

I´ve never figured out what the code that shows in the html-code does?

[AS] <OBJECT classid=“clsid:D27CDB6E-AE6D-11cf-96B8-444553540000”
codebase=“http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0” [/AS]

Whats the classid? codebase?

Do anybody now this?

THX