  PROGRAM TERMINATED ABNORMALLY
  ERROR NO.=F001, CANNOT FIND THE DATA FILE WITH THE NAME
  ERROR NO.=F002, CANNOT PERFORM THE GRAPHICS REPRODUCTION BECAUSE
  CANNOT FIND THE DATA FILE WITH THE NAME
  ERROR NO.=G001, THE NUMBER OF THE PROFILE POINTS OR LAYER 
  IS NOT CONSECUTIVE. CHECK INPUT FOR THE LABEL L,  LABEL NO.= 
  ERROR NO.=G002, NODAL POINTS NUMBER NOT IN AN ASCENDING ORDER
  CHECK INPUT FOR KQ2()
  ERROR NO.=G003, THE SEGEMENT NUMBER FOR SLIP SURFACE SHAPE
  IDENTIFICATION IS ILLEGAL, WHICH IS IN ARRAY LOO() WITH THE VALUE:
  ERROR NO.=G004, CANNOT FIND THE INTERCEPTION OF THE SLIP SURFACE
  AND THE SLOPE SURFACE AT TOE, TROUBLE IN SUB. SEAR1 AND DIVI1
  AND THE SLOPE SURFACE AT CROWN, TROUBLE IN SUB. SEAR1 AND DIVI1
  CHECK LINES AND NODAL PONITS FOR SLIP SURFACE
  THE SLIP SURFACE YOU HAVE SPECIFIED LOOKS LIKE THIS
  PRESS 'ENTER' TO CONTINUE
  PRESS 61 TO QUIT AND CORRECT YOUR INPUT DATA
  ERROR NO.=G005, EQ.54 OR EQ.55 (D. AND C. PAPER) VOILATED
  ERROR NO.=G006, INTERFACES INTERCEPT EACH OTHER
  ERROR NO.=G007, INTERFACE DOES NOT LIE BETWEEN THE BASES
  OF THE TWO CONTIGEOUS WEDGES, AT THE SLICE NUMBER 
  ERROR NO.=G008, THE INTERFACE OF TWO CONTIGEOUS SLICES CAN
  NOT INTERCEPT SLOPE FURFACE,  AT THE SLICE NUMBER
  ERROR NO.=G009, KINEMATIC CONDITIONS VIOLATED AT SLICE NO.:
  KINEMATIC CONDITION VIOLATED, AT THE SLICE NUMBER
  FOS TOO BIG
  FOS TOO SMALL
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