GRASS VALLEY EDIUS VERSION 5.1 User Reference Manual page 391

Trimming Clips
Figure 427. Trim from Clip End to Cursor
When trimming clips, the result will be different as clips are extended
based on the Overwrite/Insert mode setting. Examples appear below in
Figure 428 and Figure 429.
Overwrite Mode Trimming
Figure 428. Overwrite Mode Trimming
EDIUS — User Reference Guide 391