A UIC is a user identification code that can be in either numeric or named format. When a DCL command requires a UIC specification, you can specify either format. However, the system converts all UICs to numeric format when determining a user's access to a data resource. A UIC in numeric format consists of a group number and a member number in the format: [group,member] where: group is an octal number in the range 0 through 37776 representing the group number. member is an octal number in the range 0 through 37776 representing the member number. The square brackets are required in the UIC specification. You can also omit leading zeros when specifying group and member numbers. A UIC in named format consists of a member identifier and optionally, a group identifier, as shown in either of the following: [member] [group,member] The group and member identifiers can each contain up to 31 alphanumeric characters and must contain at least one alphabetic character. The names can include the characters A through Z, dollar signs ($) underscores (_), and the numbers 0 through 9. The brackets are required in the UIC specification. The member number is unique for each user on the system, and is equivalent to the user's numeric UIC (including both the group and the member numbers). The group identifier is equivalent to only the group portion of the UIC. For additional information on specifying UICs, refer to the HP OpenVMS Guide to System Security.