READNEXT

Argument

Input/Output

Value

CODE

Input

8

Output

unchanged

BFS

Input

BFS List

Output

unchanged

HANDLE

Input

file handle

Output

unchanged

NAME

Input

select mode (1 or 2)

Output

if select mode is 1, returned unchanged; if select mode is 2, returned with null

FMC

Input

if select mode is 1, passed the select pointer. If select mode is 2, the first call passes the sort field, and subsequent calls pass the select pointer.

Output

updated select pointer if a new key list is returned in RECORD, otherwise false

RECORD

Input

if select mode is 1, pass null (first call) or the old key list (secondary call). If select mode is 2, pass the sort specification.

Output

key list delimited with @FM; unchanged from input if status is false

STATUS

Input

false, or READNEXT direction if a secondary call

Output

true if a new list of keys is being returned in RECORD, false if no new keys are available