Option (BASIC command) Purpose Sets BASIC interpreter options for this application. Syntax Option Base Index Base Base is the only option available at this time. Specifies the default index for the first element of arrays with default lower bounds declared with Dim. Option Base must be called from the Declarations procedure of a code module, and can only be called once per application. Index 0 or 1. 0 is the default. Example Option Base 0 ... Dim MyArray(10) As Integer      'creates a 10-element array indexed from 0 to 9 Option Base 1 ... Dim MyArray(10) As Integer      'creates a 10-element array indexed from 1 to 10