Читать книгу Excel 2019 Power Programming with VBA - Michael Alexander, Dick Kusleika - Страница 148

To ensure that the Option Explicit statement is inserted automatically whenever you insert a new VBA module, enable the Require Variable Declaration option on the Editor tab of the VBE Options dialog box (choose Tools ➪ Options). It is generally considered a best practice to enable this option. Be aware, however, that this option will not affect existing modules; the option affects only those modules created after it is enabled.