Tham khảo tài liệu 'beginning autocad 2002 episode 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Layers and standard sheet 2 83 f Linetype control Similar to colour control the scroll arrow display all linetypes loaded in the current drawing. By selecting Other the Linetype Manager dialogue box will be displayed allowing the user to load any other linetype from a named file - usually . By selecting a linetype from the pull down menu the user can create objects with this linetype independent of the current layer linetype. Again this is not recommended. Layers should be used to display a certain linetype but it may be useful to have different linetypes displayed on the one layer occasionally. It is recommended that the Layer control always displays ByLayer. g Lineweight control Lineweight allows objects to be displayed and plotted with different thicknesses from 0 to mm and the lineweight control scroll arrow allows the user to select the required thickness. We will be investigating this topic in greater detail in a later chapter and will not discuss at this stage. The Lineweight control should display ByLayer. Renaming and deleting layers Unwanted or wrongly named layers can easily be deleted or renamed in AutoCAD 2002. 1 Still have the A3PAPER drawing on the screen with 7 coloured circles the circle on layer CONS was erased. Erase any lines still displayed. 2 Make layer OUT current. 3 Activate the Layer Properties Manager dialogue box by picking the Layer icon from the Object Properties toolbar and a pick New twice to add two new layers to the list - Layerl and Layer2 b rename Layerl as NEW1 and Layer2 as NEW2 c pick Show all used layers and CONS NEW1 and NEW2 will not be listed d pick Show all layers then pick OK. 4 Making each new layer current in turn draw a circle anywhere on the screen on each new layer. 5 Make layer OUT current. 6 a Activate the Layer Properties Manager dialogue box and respond pick NEW1 layer line then Delete prompt AutoCAD message - The selected layer was not deleted. b Pick OK from this message box Fig. then pick
