In fact, there are differences between "altering" and "extending". I encourage you to
read this old discussion about the topic.
Few more things
- Learn to use the "search" feature. More often than not, you will find what you are looking for and you will not have to wait long for someone to answer your new post.
- I am closing your
other post since it is about the same issue.
- I see you have registered recently. Welcome to the Ranch. Unfortunately your name seem to violate our
naming policy. Please take a quick look at the rules and
edit your profile accordingly.