blowup – Up­scale or down­scale all pages of a doc­u­ment

The pack­age blowup only de­fines the user-level macro \blowup, which can be used to up­scale or down­scale all pages of a doc­u­ment. It is sim­i­lar to the TeX prim­i­tive \mag­ni­fi­ca­tion but more ac­cu­rate and user-friendly.