Vdata Programming Model


The 'general' programming model for accessing vdatas is as follows:
Open a file and obtain a file identifier
Hopen (hopen)

Initialize the Vdata/Vgroup interface
Vstart (vfstart)

Access an individual vdata
VSattach (vsfatch)

Perform Miscellaneous Operations (reading, writing, etc.)

Dispose of the vdata id
VSdetach (vsfdtch)

Terminate access to the VS interface
Vend (vfend)

Close the file
Hclose (hclose)