Kurzweil FORTE SE Musician's Manual page 97

Program Edit Mode
The LAYER Page
delay. This doesn't change the note's attack time, just the time interval between the Note On
message and the start of the attack. The delay is measured in seconds.
Enable
This assigns a control source to activate or deactivate the layer. When the value of the
assigned control source is between the minimum and maximum thresholds set by the Sense
(S) parameter, the layer is active. When the value of the assigned control source is below
the minimum or above the maximum, the layer is inactive. By default, many layers have
the Enable parameter set to ON, so the minimum and maximum thresholds don't matter.
They're relevant only when Enable is set to a specific control source (like MWheel).
Some local control sources (KeyNum and AttVel, for example) are not valid for the Enable
parameter. In these cases, you should use the global equivalent (GKeyNum and GAttVel in
this example).
Enable Sense (S)
This parameter determines how and when a layer is enabled by the control source assigned
for the Enable parameter. Enable Sense has three values: orientation, minimum, and
maximum.
Suppose for a moment that you're editing a program, and in the current layer you've set the
value of Enable to MWheel, which causes the Mod Wheel to control whether the layer is
active. The default values for Enable Sense are as follows: orientation is Norm; minimum is
64, and maximum is 127. This means that when the Mod Wheel is less than halfway up, the
layer is disabled. The layer plays only when the Mod Wheel is more than halfway up.
Change the orientation to Rvrs, and the layer plays only when the Mod Wheel is less than
halfway up. Change the orientation back to Norm, and change the minimum to 127. Now
the layer plays only when the Mod Wheel is all the way up.
You could use this parameter to set up a two-layer program that would let you use a MIDI
control to switch between layers, say a guitar sound and a distorted guitar. Both layers would
have their Enable parameters set to the same control source, say MWheel. One layer would
have its Enable Sense orientation set to Norm, and the other would have it set to Rvrs. Both
layers would have their Enable Sense minimums set to 64, and their maximums to 127. The
first layer would play when your Mod Wheel was above its midpoint, and the second layer
would play when the Mod Wheel was below its midpoint. (You could achieve the same effect
by having the Enable Sense orientation in both layers set to Norm, and the minimum and
maximum values set as follows: minimum 0 and maximum 63 for one layer; minimum 64
and maximum 127 for the other).
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