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).
Apostrophe to show two words have been connected (contraction) We sometimes connect two words to make one shorter word. We use an apostrophe to show that we have left out one or more letters: â¦ Apostrophe + s to show possession When we show who owns something or has a close relationship with something, we use an apostrophe + s after the name or the noun. When the noun is plural, we put the apostrophe after the s: â¦