DE0
DE
Date Elements by Field Name
DE1
Date Elements by File Name + Field Name
DF0
DF
Date Files by File Name
DIRLIST
Temporary internal file
ID0
ID
Index Files by Index File Name
ID1
Index Files by DBF File
MF0
MF
Memory Files by Memory File Name
PF0
PF
Program Files by Program Name
PF1
Program Files by Procedure Name + Program Name