Linetype

You can display and change the current properties for any object in your drawing in the following ways:
Open the Properties palette and view and change the settings for all properties of the object.
View and change the settings in the Layer control on the Layers toolbar and the Color, Linetype, Lineweight, and Plot Style controls on the Properties toolbar.
Use LIST to view information in the text window.
Use the ID command to display a coordinate location.
Use the Properties Palette
The Properties palette lists the current settings for properties of the selected object or set of objects. You can modify any property that can be changed by specifying a new value.

When more than one object is selected, the Properties palette displays only those properties common to all objects in the selection set.
When no objects are selected, the Properties palette displays only the general properties of the current layer, the name of the plot style table attached to the layer, the view properties, and information about the UCS.
You can double-click most objects to open the Properties palette when the DBLCLKEDIT command is on (the default). The exceptions are blocks and attributes, hatches, gradient fills, text, multilines, and xrefs. If you double-click any of these objects, an object-specific dialog box displays instead of the Properties palette.

Commands
DBLCLKEDIT
Controls double-click behavior
ID
Displays the coordinate of a location
LIST
Displays database information for selected objects
PROPERTIES
Controls properties of existing objects
PROPERTIESCLOSE
Closes the Properties palette
System Variables
LUPREC
Sets the number of decimal places displayed for all read-only linear units, and for all editable linear units whose precision is less than or equal to the current LUPREC value
PALETTEOPAQUE
Controls whether windows can be made transparent
PICKFIRST
Controls whether you select objects before (noun-verb selection) or after you issue a command
(fr.autocad help)