Sony PRS-900BC - Manual (Page 124)

124
Managing Content

Tap  “Done.”
is changed into and the selected issues will be
protected.
Hint
 To protect all the issues, press the OPTIONS button in the
“Protect Issues” list, then tap “Protect All”  “Done.”
To remove protection
Tap

“Done.”
Hint
 To unprotect all the issues, press the OPTIONS button in the
“Protect Issues” list, then tap “Unprotect All”  “Done.”