an Exit Sub just before the error label, which forces the subroutine to exit immediately, without erroneously running the error code.

 
Public Sub Foo()
   On Error Goto Foo_Err
   ' some code goes here
   Exit Sub
Foo_Err:
   ' Error handling code goes here
End Sub

1.	Declare sub
2.	Creating Procedures
3.	Passing Arguments to Subroutines and Functions
4.	Passing Elements of an Array to Another Procedure
5.	Private (module-level) variables can be seen by any routine in the module they were declared in, but not from other modules.
6.	Public Variables
7.	Use If and ElseIf to check the parameter
8.	Pass double to sub module
9.	Calling Functions and Sub Procedures
10.	The Call Statement
11.	Only place parentheses around the arguments when calling a function and making use of the return value from the function procedure
12.	Calling the function from a Sub procedure
13.	Optional parameters

an Exit Sub just before the error label, which forces the subroutine to exit immediately, without erroneously running the error code. : Sub « Language Basics « VBA / Excel / Access / Word