START-PROOF-TREE.html -- ACL2 Version 6.3

## START-PROOF-TREE

start displaying proof trees during proofs

    Major Section:  PROOF-TREE

Also see proof-tree and see stop-proof-tree. Note that `:start-proof-tree` works by removing `'``proof-tree` from the `inhibit-output-lst`; see set-inhibit-output-lst.

Explanations of proof tree displays may be found elsewhere: see proof-tree. In a nutshell: `:start-proof-tree` causes proof tree display to be turned on, once it has been turned off by `:``stop-proof-tree`.

Do not attempt to invoke `start-proof-tree` during an interrupt in the middle of a proof.