Hi Jamal,

The heading 1 Style is built in, but Word cannot possibly incorporate every possible variation of that Style that customers might want. That is what customization is for. Since you seem to have ongoing corruption issues with incorporating 'Chapter' into the list numbering, that suggests the document corruption hasn't been fully cleared out of your document and/or there is a problem with your Word installation. Try repairing Word (Word options|Resources|Diagnose) and employing the corruption fix used last time.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]