cad常见问题命令修复（CAD FAQ command fixes）.doc

cad常见问题命令修复（CAD FAQ command fixes） The system variable stores the relevant parameters of the CAD drawing environment and command settings, so that it can fine tune the operating environment. For the sake of practicality, no longer spend too much ink explaining what system variables are. Just pick up what you think is more important and what you usually encounter in your work. CAD has a total of about 400 of the system variables, we can not be fully aware of every usage, but no need to memorize, CAD learning is a process of accumulation, encounter problems, solve problems, to more effectively grasp the system variables. Here is a list of the more frequently used drawings in the drawing process for reference (many variables are better suited for the development process, and skip this article). I will explain it from an individuals point of view. Aperture - this variable is set to capture the range of the magnetic range, and can be set as an integer between 1~50. For example, there are several straight lines on the plane, we assume that the capture has been preset point, intersection point, endpoint, if aperture value is too large, so when we move the mouse close to a straight line, may also capture the box at several points between the flash, is not easy to choose; if the value is too small then, we will only very close to the mouse to choose, can be selected, is not easy. At this point, we can enter Aperture at the command line and adjust its value according to the prompt (the variables listed in this column, such as no special hints, are used for this purpose). This variable is used to surface more content capture points. Blipmode - sets whether you leave a small cross mark on the screen each time you click the left mouse button. You can set it to on or off. This dot marker doesnt really exist. Either regen or pulling the screen will disappear. Im not sure about the use of this tag, but I hate it. Cursorsize - sets the cross cursor size, which can be set to 1~100. T