Diasonic Tech DMP-105 - Manual (Page 23)

Separating files while recording
Separating file is possible through need of user while recording.
Use FF KEY to continue recording at next index and it has made it
easy to determine the recorded information.
Notice
-. Do not take the battery out while recording. Recorded information
can be erased or it won't function properly. Always take the battery
out from stop position.
-. If memory doesn't have enough space it won't start recording.
"MEMORY FULL" will be indicated when recording time is at full.
Check leftover recording time before recording and erase all
needless files.
-. Recording at MP3 mode property is impossible so when recording
convert to record mode property then start recording.
-. Recording up to 99 messages