 
About Thumbnail Cache Files
Thumbnail cache files store small representative images of your clips that appear in the 
Browser and Timeline.
The amount of space that the cache files use is determined by the Thumbnail Cache 
setting in the Memory & Cache tab of the System Settings window. For more 
information, see “
Memory & Cache Tab
” on page 319. For information about the
autosave feature, see “
Using the Autosave Feature
” on page 20.