8-12
 The following are conventions that are used in this section when describing the various 
commands.
 {Curly Brackets} ...........  Curly brackets are used to enclose a number of items, one of which 
must be selected when using a command. Do not input the curly 
brackets when inputting a command.
  [Square Brackets] ........  Square brackets are used to enclose items that are optional. Do not 
input the square brackets when inputting a command.
  Numeric Expressions ...  Numeric expressions (such as 10, 10 + 20, A) indicate constants, 
calculations, numeric constants, etc.
  Alpha Characters .........  Alpha characters indicate literal strings (such as AB).
k Basic Operation Commands
 ? ( Input Command) 
   Function:  Prompts for input of values for assignment to variables during program execution.
  Syntax:  ?  →  <variable name>, "<prompt>" ?  →  <variable name>
Example: ? → A
  Description: 
  • This command momentarily interrupts program execution and prompts for input of a value 
or expression for assignment to a variable. If you do not specify a prompt, execution of this 
command causes “?” to appear indicating the calculator is standing by for input. If a prompt 
is specified, “<prompt>?” appears to prompt input. Up to 255 bytes of text can be used for a 
prompt.
  • Input in response to the input command must be a value or an expression, and the 
expression cannot be a multi-statement.
  • You can specify a list name, matrix name, string name, function memory (fn), graph (Yn), 
etc. as a variable name.
  
^ ( Output Command) 
   Function:  Displays an intermediate result during program execution.
   Description:
   • This command momentarily interrupts program execution and displays alpha character text 
or the result of the calculation immediately before the command.
  • The output command should be used at locations where you would normally press the w 
key during a manual calculation.