Semantic Evaluates a proof trace, and shows the contents of the Dictionary, Assumptions, Stack and Theorems when done. Syntactic Checks a proof trace for syntax errors. ProofGraph Constructs a DAG dependency graph of the virtual machine commands used in a given proof trace. WriteProof > Reads a proof trace in, converts it to a DAG a la ProofGraph, then converts it back into a linear proof trace. Delete [, , ] > Removes all theorems of specified numbers from a proof trace. Best used in conjunction with ListThm, so you can actually know what theorems are what. Generates a simplified proof trace as output. Concat > Joins two proof traces together, converts it to a DAG and back again, then outputs the result. ListThm Displays numbered theorems from a proof trace. Best used in conjunction with Delete so you know what theorems you are deleting.