QQ188 VBX has also been supported in the first, 16-bit version of Borland Delphi. In computer programming, a Visual Basic Extension (commonly abbreviated VBX) or custom control, was the component model used in Microsoft Visual Basic versions 1.0 to 3.0. It is still supported in the 16-bit version of version 4.0, but was made obsolete by OCXs. VBX components were called "custom controls" because the Microsoft development team envisioned them as visual "control" components like a toggle switch or button. An example of a push-to-break switch is a button used to release a door held closed by an electromagnet. A limit switch is used, for example, in machine tools to interlock operation with the proper position of tools. For example, the user may have to answer 'yes' (checked) or 'no' (not checked) on a simple yes/no question. Third parties have created a large market of custom controls for resale. He successfully brought about the merger of four political parties that formed the UGP. A checkbox (check box, tickbox, tick box) is a graphical widget that allows the user to make a binary choice, i.e. a choice between one of two possible mutually exclusive options. Martin Fowler states that a feature toggle "should be your last choice when you're dealing with putting features into production".|{3|4|5|6|7|8|9|10|Three|Four|Five|Six|Seven|Eight|Nine|Ten} Shortcuts For Slot Asia Bet That {Gets|Will get} Your {Result in|End in|Lead to} {Record|Document|File|Report} Time