VS - Vdata Interface

VHstoredata/vhfsd/vhfscd	Creates and writes to a single-field vdata.
VHstoredatam/vhfsdm/vhfscdm	Creates and writes to a multi-order, single-field vdata.
VSappendable/vsapp (Obsolete)	Makes it possible to append to a vdata.
VSattach/vsfatch	Attaches to an existing vdata or creates a new vdata.
VSattrinfo/vsfainf	Retrieves attribute information of a vdata or a vdata field.
VSdelete/vsfdlte	Remove a vdata from a file.
VSdetach/vsfdtch	Detaches from the current vdata, terminating further access to that vdata.
VSelts/vsfelts	Determines the number of records in a vdata.
VSfdefine/vsffdef	Defines a new field for in a vdata.
VSfexist/vsfex	Returns a value of 1 if all field(s) exist and FAIL (or -1) otherwise.
VSfind/vsffnd	Returns the reference number of a vdata, given its name.
VSfindattr/vsffdat	Returns the index of an attribute of a vdata or vdata field.
VSfindclass/vffcls	Returns the reference number of the first vdata with a given vdata class name
VSfindex/vsffidx	Retrieves the index of a field within a vdata.
VSfnattrs/vsffnas	Returns the number of attributes attached to a vdata or the number of attributes attached to a vdata field.
VSfpack/vsfcpak/vsfnpak	Packs field data into a buffer or unpacks buffered field data into vdata field(s) for fully interlaced fields.
VSgetattr/vsfgnat/vsfgcat	Retrieves the attribute values of a vdata or vdata field.
VSgetclass/vsfgcls	Retrieves the vdata class name, if any.
VSgetfields/vsfgfld	Retrieves the field names of all of the fields in a vdata.
VSgetid/vsfgid	Sequentially searches through a file for vdatas.
VSgetinterlace/vsfgint	Returns the interlace mode of a vdata.
VSgetname/vsfgnam	Retrieves the name of a vdata.
VSgetversion/vsgver	Returns the version number of a vdata.
VSinquire/vsfinq	Retrieves general information about a vdata.
VSisattr/vsfisat	Determines whether a vdata is an attribute.
VSlone/vsflone	Retrieves the reference numbers of all lone vdatas, i.e., vdatas that are not grouped with other objects, in a file.
VSnattrs/vsfnats	Returns the total number of attributes of a vdata and of its fields.
VSread/vsfrd/vsfrdc/vsfread	Retrieves data from a vdata.
VSseek/vsfseek	Provides a mechanism for random-access I/O within a vdata.
VSsetattr/vsfsnat/vsfscat	Sets an attribute of a vdata or a vdata field.
VSsetclass/vsfscls	Sets the class name of a vdata.
VSsetexternalfile/vsfsextf	Stores vdata information in an external file.
VSsetfields/vsfsfld	Specifies the fields to be accessed.
VSsetinterlace/vsfsint	Sets the interlace mode of a vdata.
VSsetname/vsfsnam	Assigns a name to a vdata.
VSsizeof/vsfsiz	Computes the size, in bytes, of the given field(s) for the local machine.
VSwrite/vsfwrt/vsfwrtc/vsfwrit	Writes data to a vdata.