OSNAP is a abbreviation of object snap which specifies a snap point at an exact location on an object. You can use an object snap once in the middle of a command, or you can set running object snaps. Running object snap modes can be toggled on and off with the Osnap button on the [...]
The break command is used for splitting objects into two or multiple objects. For example, if you want to erase the middle portion of a line, you will use the break command. The command is similar to “erase” in a graphics editing software. You can erase any portion of an object like arcs, circles or [...]
A flyout is a set of buttons nested under a single flyout button on a toolbar. Flyout buttons are defined by a black triangle in the lower-right corner. To create a flyout, you create the flyout button and associate an existing toolbar with it.
In addition to changing a button associated with a command, you can change a command associated with a button.
AutoCAD commands are organized into categories in the Customize Toolbars dialog box. You can select a category to display a set of icons that represent a group of commands. AutoCAD also provides blank icons that you can assign to any command or macro.