They can see the solutions of other participants in GYMs.

A slight adjustment, streams are only accessible to those who reached 2400 at least once, same with editing the catalog if I'm not mistaken.

They have feature of touching grass after reaching 2100

Grandmasters can allow other users to do some actions (write comments, blogs, edit gyms) on behalf of themselves

I'm Div.2 user but I can also edit problem tags (in the few days after a contest) and view others' solutions in gyms.

Div.1 people vote weighted more than me, at the same time, my votes weighted more than Div.3/4 people.

Giving more power to high rated users is really a wise move. It not only prevents the abuse of power, avoids user dissatisfaction, but also promotes academic progress.

Everything here is actually officially disclosed. It's just that there is no "one page" that lists all of these privileges. Also, many things here have a higher rating bound than just being in Div. 1.

Some additional things are:

• "Coach mode" in Gym which includes the ability to:
• • add contests to Gym (also possibly create mashups?)
• • read the solutions of others in Gym
• • edit contests in Gym (this is quite limited, but it's possible to change things like time limits of recent contests)
• Creating groups
• Proposing contests
• "Trusting" other users, which gives them the ability to
• • write blog posts (unrated users can't do that)
• • create mashups
• • create private groups

actually, i dont have the ability to determine problem rating

I have no access to problem tags.

I can't uphack solutions in all contests I just randomly chose. Actually sometime in the past I could so it might be determined by something else.

The biggest problem is actually Coach Mode in gym. Luckily if a gym contest is kindof "private", then I have no access to it.