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# Instrución Option Explicit

Specifies that every variable in the program code must be explicitly declared with the Dim statement.

The Option Explicit statement is evaluated at run time.

### Sintaxe:

Option Explicit

### Parámetros:

This statement must be added before the executable program code in a module.

### Exemplo:

    Option Explicit
    Sub ExampleExplicit
    Dim sVar As String
        sVar = "Las Vegas"
        For i% = 1 to 10 REM Isto provoca un erro en tempo de execución
            Rem
        Next i%
    End Sub