AT&T 6300 Programmer's Manual page 361

Syntax
Remarks
NEW
Command
Deletes the current program and clears all
variables, so that you can enter a new
program.
NEW
NEW is entered at command level to clear
memory before entering a new program.
GWBASIC always returns to command level
after a NEW command is executed. NEW closes
all data files and switches off the trace flag in
the same way as TROFF.
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