The command-line help for the DSMOD PARTITION command, a Active Directory command-line tool, is incorrect. When you type DSMOD PARTITION /?, you receive:

Modifies attributes of one or more existing partitions in the directory.                              dsmod partition <PartitionDN...> \[-qdefault <Value>\]                              \[-qtmbstnwt <Percent>\] \[\{-s <Server> | -d <Domain>\}\]                              \[-u <UserName>\] \[-p \{<Password> | *\}\] \[-c\] \[-q\] \[\{-uc | -uco | -uci\}\]                              <PartitionDN...>      Specifies the distinguished names of one or more                                                    partition objects to modify. If values are omitted,                                                    they are obtained through standard input (stdin) to                                                    support piping of output from another command as                                                    input of this command.                              -qdefault <Value>     Specifies that the default quota for the directory                                                    partition be set to Value. The default quota will                                                    apply to any security principal (user, group, computer,                                                    or InetOrgPerson) who owns an object in the directory                                                    partition and for whom more specific quota                                                    specification exists. Enter -1 to specify an unlimited                                                    quota.                              -qtmbstawt <Percent>  Sets the percentage by which tombstone object count                                                    should be reduced when calculating quota usage. The                                                    percentage is specified by <Percent> and must be                                                    between 0 and 100. For example, a value of 25 means                                                    that a tombstone object counts as 25, or 1/4, of a                                                    normal object when calculating quota usage. If a user                                                    were assigned a quota of 100, that user could own a                                                    maximum of 100 normal objects or 400 tombstone objects                                                    in Active Directory.                              \{-s <Server> | -d <Domain>\}                                                    Connects to a specified remote server or domain. By                                                    default, the computer is connected to a domain                                                    controller in the logon domain.                              -u <UserName>         Specifies the user name with which the user logs on to                                                    a remote server. By default, -u uses the user name with                                                    which the user logged on. You can use any of the                                                    following formats to specify a user name:                                                      user name (for example, Linda)                                                      domain\user name (for example, widgets\Linda)                                                      user principal name (UPN)                                                        (for example, Linda@widgets.microsoft.com)                              -p \{<Password> | *\}   Specifies to use either a password or a * to log on to                                                    a remote server. If you type *, you are prompted for a                                                    password.                              -c                    Specifies continuous operation mode. Errors are                                                    reported, but the process continues with the next                                                    object in the argument list when you specify multiple                                                    target objects. If you do not use -c, the command quits                                                    after the first error occurs.                              -q                    Suppresses all output to standard output (quiet mode).                              \{-uc | -uco | -uci\}   Specifies that output or input data is formatted in                                                    Unicode.                                                    -uc   Specifies a Unicode format for input from or                                                          output to a pipe (|).                                                    -uco  Specifies a Unicode format for output to a                                                          pipe (|) or a file.                                                    -uci  Specifies a Unicode format for input from a                                                          pipe (|) or a file.                              Dsmod quota only supports a subset of commonly used object class attributes.                              If a value that you use contains spaces, use quotation marks around the text                              (for example, "CN=DC2,OU=Domain Controllers,DC=Microsoft,DC=Com").                              The default quota applies to any security principal (for example, user,                              group, computer, or InetOrgPerson) that creates an object in the directory                              partition when no quota specification exists that covers the security                              principal.                              The default quota for a given directory partition is an attribute                              (ms-DS-Default-Quota) of a special container of class                              ms-DS-Quota-Container, as specified by CN=NTDS                              Quotas,DirectoryParitionRootDN.                              The tombstone quota weight for a given directory partition (set with the                              -qtmbstnwt option) is an attribute (ms-DS-Tombstone-Quota-Factor)                              of a special container of class (ms-DS-Quota-Container), as                              specified by CN=NTDS Quotas,NCRootDN.
The reference to -qtmbstawt <Percent> is incorrect. It should read -qtmbstnwt <Percent>.

NOTE: The description of the parameter is correct.