VBScript in a Nutshell, 2nd Edition

Name

Sub Statement

Syntax

[Public [Default] | Private] Sub name [(arglist)] 
   [statements]
   [Exit Sub] 
   [statements]
End Sub

Public

Use: Optional

Type: Keyword

Gives the sub procedure visibility to all scripts. If used in a class definition, the sub procedure is also accessible from outside the class. Public and Private are mutually exclusive.

Default

Use: Optional

Type: Keyword

Indicates that a public procedure defined in a VBScript class (that is, defined within a Class...End Class construct) is the default member of the class.

Private

Use: Optional

Type: Keyword

Restricts the visibility of the sub procedure to those procedures within the same script. In a class definition, restricts the visibility of the sub procedure to the class itself. Public and Private are mutually exclusive.

name

Use: Required

The name of the sub procedure.

arglist

Use: Optional

Data Type: Any

A comma-delimited list of variables to be passed to the sub procedure as arguments from the calling procedure.

statements

Use: Optional

Program code to be executed within the sub procedure.

arglist uses the following syntax and parts:

[ByVal | ByRef] varname[( )]

ByVal

Use: Optional

The argument is passed by value; that is, a local copy of the variable is assigned the value of the argument.

ByRef

Use: Optional

The argument is passed by reference; that is, the local variable is simply a reference to the argument being passed. All changes made to the local variable are also reflected in the calling argument. ByRef is the default method of passing variables. ...