# dkim_set_margin()

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SYNOPSIS |
    #include <dkim.h>
    DKIM_STAT dkim_set_margin(
    	DKIM *dkim,
            int margin);
    );
Specifies the margin to be enforced on the signature being generated. By default, the fixed value `DKIM_HDRMARGIN` (75) is used.
DESCRIPTION |
Called When | `dkim_set_margin()` can be called at any time prior to signature generation.
ARGUMENTS |
Argument | Description
--- | ---
dkim | Message-specific signing handle, returned by `dkim_sign()`.
margin | The desired margin. A value of 0 suppresses all line wrapping.
RETURN VALUES | DKIM_STAT_OK -- success DKIM_STAT_INVALID -- `dkim` referred to a verifying header rather than a signing header, `margin` was negative, or `dkim` referred to a signing handle which has already been handled by `dkim_eom()`
NOTES | None.

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