SDF 2.001: SDF Reference: langdefs Filter

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# 5.20. langdefs Filter

## Interface

The general syntax is:

      !block langdefs
      ...
      !endblock

See Understanding Filter Interfaces, if necessary.

## Description

The langdefs filter is used to configure programming language properties used by SDF's pretty-printing support. The contents is one or more vgrind definitions.

## Examples

See `langdefs.sdm` within SDF's `stdlib` directory.