How do I delete a speed constraint? A320

Hi,

1) a) How do I know, just by looking at the FMS, if I have got a speed constraint? Is it with that small magenta star?

b) How do I know, just by looking at the FMS, if I have got an ALT CST? And what If I am just flying over (no level-off) the WPT?

c) How do I delete a speed constraint in the Airbus' FMS?

d) How do I delete an ALT CST in the FMS???

2) Here: http://www.efbdesktop.com/nav-flight-management/sys-14.8.14.html

I am at WPT AEX, what does that 250/10 000 in magenta mean? That we are in managed mode ? Level-off???

Confused with this A320 sim!!!

Thanks a lot!