Hi there, I'm new on the field. Would you tell me how to pool out detail of main drawing under different zoom (how to enlarge small detail and put it by side).thanks in advance

Copy the detail. Paste it aside. By using scale command, enlarge the copied detail as you want with appropriate scale factor.
 
Tom
www.indovance.com

[QUOTE=tkelly]Copy the detail. Paste it aside. By using scale command, enlarge the copied detail as you want with appropriate scale factor.
 
Tom
www.indovance.comHi, Tom! Thank you for answer, but under "detail" I ment an area of drawingwith small sizes, which I want to desplay more clearly on side. Now I think you understood me. Thank you for your time.Peter

You can use "Viewports"  command for this. This can be ideally used when final layout of drawing is in paperspace . This can be used in model space as well but it is not so effective (in the sense drawing looks cluttered)
In viewports you can show the area you desired with required scale. but be careful in showing text in viewport you might need to create separate layer to show enlarge text that goes proportionally with viewport
View port command can be found at :
 
View :Viewport : There are various options in it.
 
This would help.
 
Tom
www.indovance.com