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\DOC p
\TYPE {p : unit -> goalstack}
\SYNOPSIS
Prints the top level of the subgoal package goal stack.
\DESCRIBE
The function {p} is part of the subgoal package, and prints the current
goalstate.
\FAILURE
Never fails.
\USES
Examining the proof state during an interactive proof session.
\COMMENTS
Strictly speaking this function is side-effect-free. It simply {{\em returns}}
the current goalstate. However, automatic printing will normally then print it,
so that is the net effect.
\SEEALSO
b, e, g, r.
\ENDDOC
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