Radio Shack TRS-80 PC-3

Input
Display
10: PRINT"IELLO"
Notice that the cursor is now in the flashing block form, indicating that it is "on top of" an existing character. Type in:
Input
GOODBYE"!
Display
10PRINT"GOODBYE"! _
Don't forget to press (ENTER) at the end of the line. Switch into the RUN mode.
Input
RUN
Display
ERROR 1 IN 10
This is a new kind of error message. Not only is the error type identified (our old friend the syntax error), but the line number in
which the error occurs is also indicated.
Switch back into the PROgram mode. You must be in the PROgram mode to make changes in a program. Using the t, recall the
last line
of your program.
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