break exits from the enclosing for or while loop, if any. If n is specified, break n levels.

continue resumes the next iteration of the enclosing for or while loop. If n is specified, resume at the n-th enclosing loop.

break resumes execution after the end of the nearest enclosing foreach or while loop. The remaining commands on the current line are executed. This allows multilevel breaks to be written as a list of break commands, all on one line.

continue continues execution of the next iteration of the nearest enclosing while or foreach loop.

break exits from the enclosed for, while, until, or select loop, if any. If n is specified then break n levels.

continue resumes the next iteration of the enclosed for, while, until, or select loop. If n is specified then resume at the n-th enclosed loop.

On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:

1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a variable assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not performed.