Casio R51 - Manual (Page 111)

FILE MANAGEMENT
111
4. Use [
̆
] and [
̄
] to
select “On”, and then
press [SET].
• A file that is protected is
indicated by the
mark.
• To unprotect a file, select
“Off” in step 4, and then
press [SET].
5. Press [MENU] to exit the menu screen.
Protecting Files
Once you protect a file it cannot be deleted (page 108).
You can protect files individually or you can protect all files
in memory with a single operation.
To protect a single file
1. In the PLAY mode, press [MENU].
2. Select the “PLAY” tab,
select “Protect”, and
then press [
̈
].
3. Use [
̇
] and [
̈
] to scroll through files and
display the one you want to protect.