No document is required.

Trustee service is not available for this extension

No. At present, the .com.sl domain zone does not provide means to hide the information of the domain owner. 

Any person or company can register this domain name extension.

The minimum period for .com.sl  domain name registration is 1 year.

The domain registration timeframe for .com.sl during general availability is 1 Day.

Once the domain expires, it will be in Renewal Grace Period for 0-60 days when the domain name can only be renewed but not transferred to another registrar, followed by a 28-day Redemption Period (also known as Pending Delete Restorable) when all services associated with the domain name (eg. DNS, website, emails) will automatically not be available but the domain can still be renewed. At the end of the Redemption Period, it enters into a 14-day Pending Purge period and the domain name can no longer be renewed or recovered. After this period, the domain will be available to the general public for re-registration on “First come First serve basis”.

Domain Names must:

• have a minimum of 4 and a maximum of 63 characters;
• begin with a letter or a number and end with a letter or a number;
• use the English character set and may contain letters (i.e., a-z, A-Z), numbers (i.e. 0-9) and dashes (-) or a combination of these;
• neither begin with nor end with a dash;
• not contain a dash in the third and fourth positions (e.g. www.ab- -cd.com.sl); and
• not include a space (e.g. www.ab cd.com.sl).

The registry that manages this domain extension is "AFcom". You can visit them at, "https://www.nic.sl/domain/"