Code before strictures are enabled at line 10, column 1.  See page 429 of PBP.  (Severity: 5)
Code before warnings are enabled at line 10, column 1.  See page 431 of PBP.  (Severity: 4)
Two-argument "open" used at line 86, column 2.  See page 207 of PBP.  (Severity: 5)
Return value of "open" ignored at line 86, column 2.  Check the return value of "open" for success.  (Severity: 3)
Two-argument "open" used at line 110, column 3.  See page 207 of PBP.  (Severity: 5)
Return value of "open" ignored at line 110, column 3.  Check the return value of "open" for success.  (Severity: 3)
Return value of "close" ignored at line 117, column 3.  Check the return value of "close" for success.  (Severity: 2)
Return value of "close" ignored at line 123, column 2.  Check the return value of "close" for success.  (Severity: 2)
Comma used to separate statements at line 137, column 5.  See pages 68,71 of PBP.  (Severity: 4)
Expression form of "eval" at line 137, column 10.  See page 161 of PBP.  (Severity: 5)
Comma used to separate statements at line 162, column 9.  See pages 68,71 of PBP.  (Severity: 4)
Comma used to separate statements at line 164, column 9.  See pages 68,71 of PBP.  (Severity: 4)
Comma used to separate statements at line 187, column 2.  See pages 68,71 of PBP.  (Severity: 4)