Vector Basic Interpreter Basic 80 Reference Manual - page 25
If an incorrect character is entered
as
a
line
is
being
typed,
it
can
be
deleted
with
the
DElete
key 'or with
BAC • DElete surrounds the deleted character (s) with backslashes, and ~PACE' has the effect of backspacing over a character and erasing it. Once a character(s) has been deleted, simply continue typing the line as desired. To delete.a line that is in the process of being typed, type Control-U. A carriage return is executed automatically after the line is deleted. To correct program lines for a program that is currently in memory, simply retype the line using the same line number. BASIC-SO will automatically replace the old line with the new line. More sophisticated editing capabilities are provided in the Extended and Disk versions of BASIC-SO. See EDIT, Section 2.16. To delete the entire program that is currently residing in memory, enter the NEW command. (See Section 2.41.) NEW is usually used to clear memory prior to entering a new program. If BASIC-SO de~ects an error that causes program execution to terminate, an error message is printed. In the SK version, only the error code is printed. In the Extended and Disk versions, the entire error message is printed. For a complete list of BASIC-SO error codes and error messages, see Appendix J.