Radio Shack TRS-80 Model II Reference Manual page 56

Library Commands
X'D7'
indicates a breakpoint
has been set at this address.
To delete a single breakpoint without affecting any others, press
miEn
instead of providing a new address for the breakpoint. To delete all
breakpoints, press I] for "Empty breakpoint table".
C (Continue)
Press to enter this command.
It
resumes execution of your program at the
address pointed to by
Pc.
Use it after the debugger has stopped at a
breakpoint. The original instruction at the breakpoint address will be
executed, but the breakpoint will remain in place.
D (Decimal Format)
Press [!J to enter this command. It displays all addresses in decimal form.
However, the contents of all registers and memory addresses are still
displayed in hexadecimal. In the decimal display format, you must enter all
addresses as five-digit decimal numbers.
E (Empty Breakpoint Table)
Press to empty the breakpoint table. All breakpointed instructions will be
restored.
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