1. Check the size,color and positioning of the save button.
2. the name of the button should be save
3. the button should be in the notepad
4. check whether the button is enable in the notepad
5. check, while clicking the save button the data's in the 
notepad should be saved in the corresponding database.

case1:if the notepad is fresh and going to save firs time
click save from file menu or by pressing Ctrl+s..
1.saveas dialog box should open with save and cancel button.
2.without giving name click on save button and sililarly 
cancel button 
3.open new notepad and try to save it with existing file 
name.txt
4.check the extension of notepad after saving.
case2:if the document exiss and modifying then..
click on save from file menu or press ctrl+s
1.save dialog box should not open..it should save the 
document and remain in that previous position..
2.After save the changes then check the save details in the 
document.

GUI:
look,font,size,color,position of the button..
spelling of save on save button..