Under the left side of the front wood rail, there is a drawer which slides out which contains several functions. 

First, it houses the 'drawbars' similar to Hammond drawbars, allowing the organist to set various sounds by varying the volume of the various drawbars. There are also percussion drawbars (with even more ranges than the Hammond had) and with the ability to vary the percussion sustain by how far the drawbar is pulled.

These 'drawbar' settings can then be 'saved' to the Memory buttons on the control panel, allowing quick access to them. There are three 'memory' buttons for each manual, and one 'active' button, which recalls the current drawbar settings.

In addition to the drawbar settings, the drawer also contains controls for varying the vibrato of the individual instruments in the orchestra, custom voice, solo manual, and pedal section (other than drawbar voices). With these controls one can achieve a wonderful 'orchestral' sound, with each instrument having it's own distinct vibrato. The controls allow changing in speed, depth, delay, and touch depth of the vibrato for each instrument.

Also, in the drawer are more of the controls for the Rhythm Sequence Programmer. They allow one to select a rhythm or break variation for each measure of a song, making it possible to put together an interesting drum arrangement that can be saved on one or more of four Program buttons on the control panel, each of which holds 64 measures. They can be combined for longer songs, and can then be saved onto the Memory pistons between the keys, and also on the RP-1 packs. The packs not only remember that there is a program, but exactly what the program is, allowing many programs to be saved.