The multiplier in % applied to a incoming Source to determine the output value of that line.  The maximum weight applied in Inputs is 100%.  The maximum weight applied to a Mixer input is 500% to determine the output weight to the servo on that channel.  The “normal” input weight to a servo is limited to 100%.  If “Extended Limits” is checked in Model Set Up, the maximum input weight to a servo may extend to 150%.  Similar to “Rates” in other radio systems.