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).
2000, 1978 Margaret L. Benner. An apostrophe is a small punctuation mark (  ) placed after a noun to show that the noun owns something. The apostrophe will always be placed either before or after an s at the end of the noun owner. Always the noun owner will be followed (usually immediately) by the thing it owns. How can you know: