You can delete patterns from a catalog or entire catalogs of patterns. 
A deleted pattern will disappear from its catalog, but will be placed 
in the "Recycle Bin" catalog located at the end of the list of catalogs.  
This gives you an opportunity to rescue a pattern you might have deleted 
accidentally.

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.

To see more pattern thumbnails at one time, sweep the screen upwards. 
To reduce the number of thumbnails, sweep the screen downwards.  
To find a pattern quickly, touch the alphabet and the screen will 
move to the patterns beginning with the letter you selected. 
Alternatively you can browse the patterns by using the < and > buttons 
or by sweeping the screen left and right. A quick, short sweep or flick
will move a few patterns; a long, fast sweep will scroll through many 
thumbnails.

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 if you use the alphabet bar or the < or > buttons, the 
selection will be reset.
On the other hand, the patterns will remain selected is you sweep or
flick the screen.

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. 

