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3.1.2 The SINGULAR prompt
The SINGULAR prompt> (larger than) asks the user for input
of commands. The "continuation" prompt . (period) asks the
user for input of missing parts of a command (e.g. the semicolon at
the end of every command).
SINGULAR does not interpret the semicolon as the end of a command
if it occurs inside a string. Also, SINGULAR waits for blocks
(sequences of commands enclosed in curly brackets) to be closed before
prompting with > for more commands. Thus, if SINGULAR does
not respond with its regular prompt after typing a semicolon it may wait
for a " or a } first.
Additional semicolons will not harm SINGULAR since they are interpreted as empty statements.