Sony PRS-900BC - Manual (Page 125)

125
Managing Content
Managing periodicals
In the issue list, you can keep only recent issues and
delete previous issues automatically.

In the issue list, press the OPTIONS button, then
tap “Manage Subscription.”
The management dialog appears.

Tap the desired setting  “Save.”
Hints
 If you want to delete extra issues immediately, tap “Delete
extra issues now.”  “Save.” In the confirmation dialog, tap
“Yes.”
 If you have issues that you do not want to delete, protect
them using “Protect Issues” in the option menu ( page
123 ).
Notes
 You cannot manage periodicals on memory cards via the
Reader.
 If the number of issues in the list is less than your selected
number, “Delete extra issues” will not delete any issues.