The use of attribute tool column

Column has the attribute tool of AutoCAD2000 many times to draw list circle, they are list of wide list of graph layer list, color list, line list, line, the style that print, there still is to tag type list to be the same as attribute in tagging tool column a concept. The usage of these list casing has two kinds: The first kind: When doing not have object of make choice of, a project choosing in list casing is the basis that changes current condition make choice of go up, be like, make choice of the 3rd in graph layer list, it is setting of layer of the 3rd graph current plan layer, in some later the object of place scale is in layer of the 3rd graph. Color, line, line list of the wide, style that print is same argument. Usually, color, line, the wide, style that print sets the line to follow a layer, namely these settings in setting acquiescent graph layer, the management of such facilitating objects. The 2nd kind: Be elected when deciding an object, a project chooses in list casing, change the position of the object of make choice of the setting position of project of make choice of. Be like, be elected decided an object, chose the 2nd in graph layer list next, change the graph layer of object of make choice of it is the 2nd. Additional, the function of graph layer list is stronger, it is graph layer management implement simplify. You can be opened at will in graph layer list / shut graph layer, freeze / defrost graph layer, the lock is decided / Jie Suotu layer, it is OK to want a dot to take corresponding icon only. But these attribute tools have a drawback, go to its switch in object of make choice of namely after other condition, the condition of make choice of of the object did not remove, cancel so " ESC " key is used very more, the following version can be improved, a requirement perhaps can raise in option best. CNC Milling