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).
Part 1 of 3: Using Possessive Apostrophes. 1. Use an apostrophe to indicate ownership by a proper noun. An apostrophe with an s after a proper noun indicates that the person, place or thing owns whatever noun follows his or her name.For example, Mary's lemons.. We know the lemons belong to Mary because of the ' s.d. 2. Be consistent when you use apostrophes after words that end in s.  When someone's name ends with an s, it is acceptable to use an apostrophe without an s to show ownership, but linguists with the Chicago Manual of Style, along with others, prefer to add an s after the apostrophe.