Same thing (one small difference only for sequencing)… from manual:
CONTROL ALL “CTR-AL”
This machine simultaneously controls the chosen
parameter or parameters for all 16 tracks. Manipulating
one parameter on the CTR-AL machine will affect the
corresponding parameter on all 16 tracks. Note that
CTRL-AL does not affect the MIDI machines or the
SYNTHESIS page of RAM RECORD machines. The
functionality of this machine is similar to the [FUNCTION]
- DATA ENTRY knobs operation described on
page 37 . The major difference is that using this
machine, you can set trigs.
I never use the Ctrl-Al machine because I just knob+FN it! 
