input.txt

CREATE file1
CREATE file2
CREATE file3
CREATE file4
CREATE file5

# Error handling
CREATE file1                      
READ fileX                       
INSERT file1                     
UPDATE file2                     
SNAPSHOT file3                    
ROLLBACK file3 999                
ROLLBACK file3                    
RECENT FILES 10                   
BIGGEST TREES 10
INSERT file1 A
SNAPSHOT file1 "snap1"
INSERT file1 B
SNAPSHOT file1 "snap2"
INSERT file1 C
ROLLBACK file1 1
INSERT file1 D
SNAPSHOT file1 "branch-snap"
INSERT file1 E
ROLLBACK file1 2
INSERT file1 F
INSERT file2 P
INSERT file2 Q
SNAPSHOT file2 "snap1"
INSERT file2 R
ROLLBACK file2 1
INSERT file2 S
SNAPSHOT file2 "branch-snap"
INSERT file2 T
ROLLBACK file2 0
INSERT file2 U
INSERT file3 M
SNAPSHOT file3 "snap1"
INSERT file3 N
INSERT file3 O
SNAPSHOT file3 "snap2"
ROLLBACK file3 1
INSERT file3 P
SNAPSHOT file3 "branch-snap"
INSERT file3 Q
ROLLBACK file3 0
INSERT file3 R
INSERT file4 X
INSERT file4 Y
SNAPSHOT file4 "snap1"
INSERT file4 Z
ROLLBACK file4 0
INSERT file4 W 
SNAPSHOT file4 "branch-snap"
INSERT file4 V
ROLLBACK file4 1
INSERT file4 U            
INSERT file5 a
SNAPSHOT file5 "snap1"
INSERT file5 b
INSERT file5 c
SNAPSHOT file5 "snap2"
ROLLBACK file5 1
INSERT file5 d
SNAPSHOT file5 "branch-snap"
INSERT file5 e
ROLLBACK file5 0
INSERT file5 f
RECENT_FILES 5
BIGGEST_TREES 5
EXIT