ACL2-PC_colon__colon_TOP.html -- ACL2 Version 6.3

### ACL2-PC::TOP

(atomic macro) `` move to the top of the goal

    Major Section:  PROOF-CHECKER-COMMANDS

    Example and General Form:
    top

For example, if the conclusion is `(= x (* (- y) z))` and the current subterm is `y`, then after executing `top`, the current subterm will be the same as the conclusion, i.e., `(= x (* (- y) z))`.

`Top` is the same as `(up n)`, where `n` is the number of times one needs to execute `up` in order to get to the top of the conclusion. The `top` command fails if one is already at the top of the conclusion.

See also `up`, `dive`, `nx`, and `bk`.