You can delete patterns from a catalog or entire catalogs of patterns. 
Think carefully before deleting anything - once it is deleted, it is gone. 
You cannot undo delete.

To select an entire catalog of patterns, touch its name.  The name will be
highlighted in yellow. Touch [Delete]. A message will appear asking if
you're sure you want to erase the entire catalog. The name of the
selected catalog will be shown. Think about whether you really want to
get rid of all the patterns in that catalog before touching [Yes].

To select just some patterns from a catalog, first touch the name of the
catalog where the patterns are saved. Images of all the patterns 
contained in that catalog will be shown on the screen, 9 at a time. 
If there are more than 9 patterns in a catalog, touch [Next] to view 
the next group of 9.

When you see the pattern you want to erase, touch its image. The
pattern will turn red. You can select more than one pattern by touching
their image. If you want to undo a selection, touch the pattern again.
Note that you can select patterns only on one screen at a time. If you
touch [Next] or [Previous], the selection will be reset.

When all the patterns are selected touch [Delete]. A message will appear 
asking whether you really want to erase the selected patterns. 
Touch [Yes], if you're sure you want to get rid of them. 
<b>When you touch [Yes], the images and patterns will be deleted
<b>permanently.
