optional argument times is not specified, you can enter it on the input line.
A (possibly iterated) macro execution terminates as soon as its stream of
instructions is exhausted, or one of its commands returns an error. This means
that, for instance, you can perform some complex operation on all the lines
contaning a certain pattern by recording a macro that searches for the pattern
and performs the operation, and then playing it a preposterously huge number of
times. Note that the execution of a macro can be interrupted by