HP 39g Graphing Calculator - Manual (Page 236)

MSGBOX
PROMPT
WAIT
Displays a message box containing textitem. A text item
consists of any number of expressions and quoted strings of
text. The expressions are evaluated and turned into strings of
text. For example,
"AREA IS; " 2+2 becomes AREA IS: 4. Use |
shift
|C7 m ;«
to type the quote marks "
MSGBOX textitem:
Example
1 ► A:
MSGBOX "AREA IS: "Jl*A''2 :
You can also use the NoteText variable to provide text
arguments. This can be used to insert line breaks. For
example, press
[ shift
|W07R and type AREA IS [ enter |.
The position line
MSGBOX NoteText " " 7r*A"-2 :
will display the same message box as the previous example.
Displays an input box with name as the title, and prompts for
a value for name, name can only be one character in length.
PROMPT name
Halts program execution for the specified number of seconds.
WAIT seconds
15-28 Programming