The menu bar shows the topmost menus. These include File, Select, Edit, Insert, Tools, Measure, View and Help menus. This pull-down menu bar can be freely docked anywhere and some commands have icons to represent them or shortcut keys on the right. For a command, if there is "..." beside it, a dialog box or dialog tree will come out after it is clicked. If there is an arrow beside it, there is a sub menu. Please refer to the following pictures: