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)