The Vgroup interface routines are listed in Table 5A below and described in the following sections.
TABLE 5A - Vgroup Interface Routines
5.3.2 Identifying Vgroups in the Vgroup Interface
The Vgroup interface identifies vgroups in several ways. In some cases, a vgroup can be accessed directly through the use of its unique reference number. In other cases, the reference number and the routine Vattach are used to obtain a vgroup identifier. The reference number of a vgroup can be obtained from the name or the class of the vgroup, or by sequentially traversing the file. The concept of reference number is discussed in Section 2.2.2.1 on page 8.