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).
A discussion of each mark follows, in alphabetical order by name of mark. Apostrophe (â) is used to indicate possession, contractions, and plurals. 1  Possession:  The possessive form of singular nouns ends in âs, including nouns ending in s, x, z, ch, or sh. For example: a dogâs life, a lassâs smile.