PSPEC_TAC : term * term -> tactic
STRUCTURE
PairRules
LIBRARY
pair
SYNOPSIS
Generalizes a goal.
DESCRIPTION
When applied to a pair of terms (q,p), where p is a paired structure of variables and a goal A ?- t, the tactic PSPEC_TAC generalizes the goal to A ?- !p. t[p/q], that is, all components of q are turned into the corresponding components of p. 
        A ?- t
   =================  PSPEC_TAC (q,p)
    A ?- !x. t[p/q]

FAILURE
Fails unless p is a paired structure of variables with the same type as q.
EXAMPLE
- g `1 + 2 = 2 + 1`;
> val it =
    Proof manager status: 1 proof.
    1. Incomplete:
         Initial goal:
         1 + 2 = 2 + 1

- e (PSPEC_TAC (Term`(1,2)`, Term`(x:num,y:num)`));
OK..
1 subgoal:
> val it =
    !(x,y). x + y = y + x

     : proof

USES
Removing unnecessary speciality in a goal, particularly as a prelude to an inductive proof.
SEEALSO
PGEN, PGENL, PGEN_TAC, PSPEC, PSPECL, PSPEC_ALL, PSTRIP_TAC
HOL  Kananaskis-14