1 The rarer minus-plus sign (â) is not generally found in legacy encodings and does not have a named HTML entity but is available in Unicode with codepoint U+2213 and so can be used in HTML using &#x2213; or &#8723; . 2  In TeX 'plus-or-minus' and 'minus-or-plus' symbols are denoted \pm and \mp, respectively. In engineering the sign indicates the tolerance, which is the range of values that are considered to be acceptable, safe, or which comply with some standard, or with a contract. 2  In chemistry the sign is used to indicate a racemic mixture.
While Evernote for iPhone is free, a Premium account costs extra: $45 per year, or $5 per month. The Premium account applies across your entire Evernote account, so you get the Premium perks wherever and however you use Evernote.
From 5m users, 2% = 100,000 premium subscriptions. At Â£10 per month from each of those, that's Â£1m per month. Of course if that is the case, then the licence costs will change - to Â£100,000 per month, a saving of Â£500,000 per month.