from a specific username.
This should only be done to prevent vandalism and protect the site.
'''Remember to check the user's block log and talk page ''before'' blocking, and <font color="crimson">''always'' fill in a reason for your block!'''</font>
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:#''For established users'': Under the consensus of two or more administrators.
:#''For new users'': Vandalism after previous warning ''and'' a previous block.
===Blocking Options===
*'''Block anonymous users only''': This option changes the effect of a block when blocking an IP address. When it is enabled, the block will only affect anonymous users editing from that IP address; registered users editing from that IP address will not be affected. The option has no effect on a block of a registered user.
*'''Prevent account creation''': This should only be unchecked if the block is for an unintentional, improper username (such as a name which is accidently too close to someone else's). Leaving this unchecked will allow the blocked user to create another account. ''For most vandals, always check this option.''
*'''Automatically block the last IP address...''': Should generally be checked for malicious and persistant vandals.
*'''Prevent user from sending e-mail''': Should only be used if the user being blocked is suspect to email abuse.
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