Supported Browsers for EP6.0 Sp4

I recently checked the Product Availability Matrix for NW 04 and found that IE5.5 SP2, IE 6.0 and Mozilla 1.7 are supported.

However, when configuring main_rule for EP6.0 Sp4 I have quite a few more options in browser types (e.g. MSPIE, Opera and others)

Can anyone clarify which browser types are actually supported by EP6.0 SP4

Thank you

Thomas Stig