Using Director > Writing Scripts with Lingo > Expressing literal values > Expressing constants |
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Expressing constants
A constant is a named value whose content never changes. For example, TRUE
, FALSE
, VOID
, and EMPTY
are constants because their values are always the same.
The constants BACKSPACE
, ENTER
, QUOTE
, RETURN
, SPACE
, and TAB
refer to keyboard characters. For example, to test whether the user is pressing the Enter key, use the following statement:
if the key = ENTER then beep
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