A statement of the form:
S_1; S_2
executes S_1, and then if the outcome is normal, executes
S_2. If the outcome of S_1 is an exception, S_2
is ignored.
Some programmers use the semicolon as a statement terminator, some as a statement separator. Similarly, some use the vertical bar in case statements as a case initiator, some as a separator. Modula-3 allows both styles. This report uses both operators as separators.