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Frontend documentation #766

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13 changes: 12 additions & 1 deletion docs/sphinx_docs/Usage/index.md
Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,18 @@ Alt-Ergo supports file extensions:
- `.psmt2`, `.smt2` for (our polymorphic extension of) the SMT-LIB 2
standard

See the [Input section] for more information about the format of the input files
See the [Input section] for more information about the format of the input files.

### Frontend option

The `--frontend` option let's you select the frontend used to parse and type the input file. Since version 2.5.0,
Alt-Ergo integrates two frontends:
- The `legacy` frontend is the historical frontend of Alt-Ergo supporting the native language
and (partially) supporting the SMT-LIB language. The legacy frontend is currently the default.
- The `dolmen` frontend is a new frontend using the [Dolmen library](https://github.com/Gbury/dolmen).
The native and SMT-LIB languages are both supported by this frontend.
You can select it with the `--frontend dolmen` option, which is planned to become the
default in a future release.

### Generating models
Since 2.5.0, Alt-Ergo also generates models in the case it concludes on the satisfiability of
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