| In this picture the ovals
again represent control states of the machine and the arrows
represent transitions between control states. However, since
the Turing Machine may move R, L, or Write to the tape, the action
is represented explicitly in the diagram. On each arrow is the
tape element followed by the '/' and then the action. For example,
the transition from da to srb represents the tuple "da a
# srb"; that is if you are in control state "da"
and you are reading an "a" on the tape, then overwrite
a with # (i.e. erase it) and make srb the current control state.