True CS 1.0 Owner's Manual page 17

Glute
Buster
Leg Shaper
Cardio
Challenge
These are TRUE's original four pre-set workouts. Changing the workout
time stretches and compresses the workout profile, in ontrast to the
four new pre-set workouts. Other differences are explained below in the
individual workout sections.
Incline changes in varying amounts in contrast to the new Hills
workout, which has hills of the same size all throughout the workout.
Very similar to Hill Intervals, with varying incline changes.
Similar to Speed Ramp, except both speed and grade change.
CS1.0 Treadmill Owner's Guide
Pre-Set Workouts
chapter one: basic operations
= Incline
= Speed
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