# Convert Theorem/Lemma

Convert between theorem and lemma keywords.

This tool is deprecated and will be removed in a future release.

Use [extract_decls](https://axle.axiommath.ai/extract_decls) instead, which supports all declaration kinds.

## Input

**environment***

Lean environment or version:

lean-4.32.0 lean-4.31.0 lean-4.30.0 lean-4.29.0 lean-4.28.0 lean-4.27.0 lean-4.26.0 lean-4.25.1 lean-4.24.0 lean-4.23.0 lean-4.22.0 lean-4.21.0

**ignore_imports**

Ignore import mismatches

Default header (injected when enabled):

```lean
import Mathlib
```

**content***

Lean source code

**names**

Theorem names to process.

**indices**

Theorem indices to process.

**target**

Target keyword (lemma or theorem).

**theorems_only**

Process theorems/lemmas only.

**timeout_seconds**

Max execution time in seconds.

RUNCLEAR

Processing request...