Philips CDD522 Operating Instructions Manual page 41

K. One Session fixated Disk (Orange Book).
The 'li' and 'to' indicate that Lead-in (LI) and Lead-Out (LO) have
not been actually written on the disk (the disk is not Final
Fixated).
-> is the pointer to the next Session.
¥ isthe pointer to the present Session.
L Fixated Disk with more Sessions (Yellow or Green Book).
—» is the pointer to the next Session.
¥ isthe pointer to the present Session.
M. Final Fixated Disk (Yellow or Green Book).
A final fixated disk carries no —» pointer in the last lead-in.
This indicates to the CD-R that no Sessions may be recorded
after the last one. .
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