HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 374

hp40g+.book Page 26 Friday, December 9, 2005 1:03 AM PRVAR Prints name and contents of variablename. PRVAR variablename: You can also use the PRVAR command to print the contents of a program or a note. PRVAR programname;PROG: PRVAR notename;NOTE: Prompt commands BEEP CHOOSE CLRVAR Beeps at the frequency and for the time you specify. BEEP frequency;seconds: Creates a choose box, which is a box containing a list of options from which the user chooses one. Each option is numbered, 1 through n. The result of the choose command is to store the number of the option chosen in a variable. The syntax is: CHOOSE variable_name; title; option1; option2; ...optionn: where variable_name is the name of a variable for storing a default option number, title is the text displayed in the title bar of the choose box, and option1...optionn are the options listed in the choose box. By pre-storing a value into variable_name you can specify the default option number, as shown in the example below. Example 3 X A:CHOOSE A; "COMIC STRIPS"; "DILBERT"; "CALVIN&HOBBES"; "BLONDIE": Clears the specified variable. The syntax is: CLRVAR variable : 21-26 Programming