Each memo can include 4,096 characters of text.
You can assign categories to your memos. Open the item you want to change, select the category pick list at the top of the screen, and select a category.
Memos
Memos are a great way to store notes on your Treo 650 smartphone.
Creating a memo
1.Go to Applications 
and select Memos 
.
2.Enter the text you want to appear in the memo.
3.Select Done.
Deleting a memo
1.Select the memo you want to delete.
2.Open the menus 
.
3.Select Delete Memo on the Record menu.