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 Rules for Possessives. A lot of people get confused about when they need to use an apostrophe and when they donât. Here are a few apostrophe rules to help you decide. Use an apostrophe + S (âs) to show that one person/thing owns or is a member of something. 1  Amyâs ballet class, Lisaâs car, Robertâs car, Rossâs room, Rossâs sports teams.