GrXML grammars (grammars coded using the W3C's SRGS XML form) can be translated to the ABNF syntax using NuGram IDE: this can be done one grammar at a time, or in batch.
To convert a single GrXML grammar to ABNF, select the resource in the Navigator view, open the contextual menu by right-clicking on the resource, and select Grammar Tools > Convert To ABNF:
An ABNF grammar with the same name as the GrXML grammar, but with the extension .abnf,
is created in the same folder.
GrXML grammars must have the extension .grxml.
All GrXML grammars in a folder and its subfolders can be translated to ABNF at once. To do that, simply select the folder in the Navigator view, open the contextual menu by right-clicking on the folder, and select Grammar Tools > Convert All GrXML Grammars To ABNF:
