margins([top], [right], [bottom], [left], [pageNumber])
Sets the margins of a given page. If 1 value is given, all 4 sides are set equally. If 4 values are given, the current page will be adjusted. Optionally a page number or name can be given to set the margins of a specific page. Calling the function without any values will return the margins for the current page.
Type: function
Parameter(s):
- top {Number} Optional:Top margin or all if only one. 
- right {Number} Optional:Right margin. 
- bottom {Number} Optional:Bottom margin. 
- left {Number} Optional:Left margin. 
- pageNumber {Number} Optional:Page number, page name or page object of the page with margins to set; current page if left blank. 
Returns:
- 
    {Object}:
 Current page margins with the properties: top,right,bottom,left.