Performance Gap. Background. In recent years, the housebuilding industry and government have grown increasingly concerned over the potential gap between design and as-built energy performance.
The apostrophe (â or ') is a punctuation mark, and sometimes a diacritical mark, in languages that use the Latin alphabet or certain other alphabets.In English, it serves three purposes: 1  The marking of the omission of one or more letters (as in the contraction of do not to don't).he apostrophe (â or ') is a punctuation mark, and sometimes a diacritical mark, in languages that use the Latin alphabet or certain other alphabets. In English, it serves three purposes: 1  The marking of the omission of one or more letters (as in the contraction of do not to don't).
The apostrophe ( â or ' ) character is a punctuation mark, and sometimes a diacritical mark, in languages that use the Latin alphabet and some other alphabets. The marking of the omission of one or more letters (as in the contraction of do not to don't, or in city names such as Villeneuve d'Ascq).