
274 Programming in HP PPL
Export X2M1(X)
BEGIN
RETURN X^2-1;
END;
VIEW Syntax: VIEW “text”, functionname();
Replaces the View menu of the current app and adds an
entry with “text”. If “text” is selected and the user
presses or E , then functionname() is
called.
KEY A prefix to a key name when creating a user keyboard.
See “The User Keyboard: Customizing key presses” on
page 256.
Commands under the Cmds menu
Strings
A string is a sequence of characters enclosed in double
quotes (""). To put a double quote in a string, use two
consecutive double quotes. The \ character starts an
escape sequence, and the character(s) immediately
following are interpreted specially. \n inserts a new line
and two backslashes insert a single backslash. To put a
new line into the string, press
E to wrap the text at
that point.
ASC Syntax: ASC (string)
Returns a list containing the ASCII codes of string.
Example: ASC("AB") returns [65,66]
CHAR Syntax: CHAR(vector) or CHAR(integer)
Returns the string corresponding to the character codes in
vector, or the single code of integer.
Examples: CHAR(65) returns "A"
CHAR([82,77,72]) returns "RMH"
DIM Syntax: DIM(string)
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