VBScript Questions

1. What does the % symbol do when using VBScript in conjunction with HTML?

2. If Visual Basic 6.0 and VBScript share (for the most part) the same syntax, why is that it is syntactically legal to run certain code outside of a procedure in VBScript, but the same code will not compile in VB 6.0 (VB 6 compiler gives an error saying code cannot run outside of procedure)?