HP 3000 Manuals HP 3000 Manuals
Accessing Domains A domain is part of the "access path" to System Dictionary. Therefore, you must specify a domain each time System Dictionary is open in a mode that allows access to domains. Unlike domains that you name, the common domain does not have a name (its name is blank), and you access it by using blanks when specifying the domain to use. Because only one dictionary can be open at a time through SDMAIN, you are restricted to using only one domain at a time. You can switch to another domain (modify the current access path), but the rule that you can use only one domain at a time is enforced. Although you can establish multiple access paths to one or more dictionaries simultaneously via the System Dictionary intrinsics, and can switch between paths, you can only specify one domain at a time per access path, and only one of these paths may be used at a time. Therefore, the rule that you may use only one domain at a time is still enforced. In any case, you must work entirely within the specified domain except when using a local domain that has links to the common domain. (See the discussion on "linking", further on in this chapter.) Note that you are able to access only the occurrences in the domain specified in the current access path.