File Handling and System IO task.

I have commented these questions on Rachael's blog, but just in case someone else reads this first and knows the answers ...

Hi Rachael.
Just a quick question about the "File Handling and System IO" task.
For Activity 8 we are asked to place five button controls on the interface (btnOpenFile, btnSaveFileAs, btnOpenLog, btnSaveLog and btnDeleteFile) but we are only given code to include for the first three. Is there some code missing from the assessment sheet or are those extra two buttons not required?
We are however given code for a button called btnClearTextbox which we have not yet added to the interface. Is this a new button or the code for one of the other buttons which we can just rename?
Hope this makes sense and that you are having a nice break.
Deb.