| DGINDX | 
Input | 
INDEX NAME PROPERTY OF THE QUERY OBJECT
 
 | 
DGVAL | 
Input | 
Array of data elements for start/end of search.
DGVAL("DFN") = PATIENT DFN
DGVAL("BDT") = BEGIN DATE
DGVAL("EDT") = END DATE
DGVAL("VIS") = ENCOUNTER FILE IEN
 | 
DGFILTER | 
Input | 
The executable code used to screen entries.
 
 | 
DGCBK | 
Input | 
The executable scan callback code to create the
result set.
 
 | 
DGCLOSE | 
Input | 
Flag that says whether or not to close the query
object.
1 = Perform close
0 or Null = Do not close object
 
 | 
DGQUERY | 
Input | 
The number of current query, if not a new query. If
passed by reference and query closed, this variable will be nulled.
NOTE:  When using this call, the variable passed as DGQUERY must be newed or
killed in the calling program
 
 | 
DGDIR | 
Input | 
The direction of the scan (optional).
Null, undefined or "FORWARD": Scans forwards.
"BACKWARD" : Scans backwards
 
 |