Kurzweil FORTE SE Musician's Manual page 202

The End parameter sets the point at which the current sample will stop playback. Typically
you'll use this parameter to trim unwanted silence off the end of a sample, although you can
use it to shorten a sample as much as you want.
Note On Saving Samples: Trimmed portions of a sample are not saved. Trimmed
portions before the Start, or Alternative Start points. Trimmed portions of a sample
saved to a user ID will be deleted. Trimmed portions before the Start or Alternative Start
points (whichever has a lower value) will be lost upon saving to a user ID, and whichever
parameter had a lower value will have a value of zero the next time it is loaded (values for
all other sample point parameters will be adjusted relatively). Trimmed portions after the
Alternative Start or End points (whichever has a higher value) will be lost upon saving
to a user ID. For factory samples, the original untrimmed sample is always available by
selecting the sample's original factory ID number. Saving trimmed factory samples to user
IDs will not change the sound of factory samples, keymaps, or Programs.
Keymap and Sample Editing
Editing Samples
9-15