./../data/standard.txt:109 (ERROR/3) Undefined substitution referenced: "problematic".
./../data/standard.txt:361 (ERROR/3) Unknown target name: "nonexistent".
./../data/standard.txt:353 (ERROR/3) Unknown target name: "5".
./../data/standard.txt:388 (ERROR/3) Unknown target name: "hyperlink reference without a target".
./../data/standard.txt:403 (ERROR/3) Duplicate target name, cannot be used as a unique reference: "duplicate target names".
