The Editor tab in the Options dialog box

The Editor tab in the Options dialog box contains settings for indenting, such as turning automatic indenting on or off and changing the width of a tab from the default of four spaces.
Using the Line Continuation characters
You can use the line-continuation character, the underscore (_), to break up a single code statement into multiple lines. This makes the code statement easier to read because it's fully contained within the Code Editor window.
The line-continuation character is placed after a space in the statement, as shown in the following example code:
MsgBox "User Name = " & txtUserName.Text & _
", Password = " & txtPassword.Text