Here is some that i found online
When you use the SOLVIEW and SOLDRAW commands, new layers are created. This solution explains the meaning of the suffixes in the names of the layers that are created.
The following list details the suffixes and their meanings for layers created when you use the SOLVIEW and SOLDRAW commands:
DIM - dimension information
HAT - hatch patterns
HID - hidden line information
VIS - visible line information
Important: These layers are re-created if you repeat the SOLDRAW command using the same layer name. Any object on a layer that is re-created will be deleted. Do not use these layers for normal drawing. Use these layers only to manipulate the display of views created in the software.
You use the SOLDRAW command and you select a standard clipped viewport that was created either by using the VPCLIP command, or by selecting the Polygonal or Object option of the VPORTS command. However, the following error displays and you exit the command:
Non-SOLVIEW viewport ignored
The SOLDRAW command requires that the selected viewport have properties that existed when the viewport was created using the SOLVIEW command. However, there is no option to create a clipped SOLVIEW viewport.
Use the following procedure to create a clipped viewport that can be recognized by the SOLDRAW command:
Create a SOLVIEW viewport.
Refer to Help or the related topic for additional information about using the SOLVIEW command.
Create a boundary that represents the area you want for the clipped viewport.
The boundary you create must be a closed polyline, an ellipse, a spline, a region, or a circle.
On the command line, type vpclip and press ENTER to clip an existing viewport.
Select the SOLVIEW viewport created in step 1.
Select the clipped boundary created in step 2.
The original SOLVIEW viewport is replaced with the clipped boundary.
The new clipped viewport is a SOLVIEW viewport that the SOLDRAW command can recognize."
"Creating 2D drawings from a 3D solid model
Applies to: AutoCAD® 2000,
Published Date: 06/04/2001
You can use the SOLPROF command to create a two dimensional drawing from three dimensional solids in AutoCAD®.
The SOLPROF command is used to create two dimensional (2D) and three dimensional (3D) profiles of AutoCAD ACIS solid models.
These steps show how to use the SOLPROF command to create a 2D profile.
Open a drawing that contains a solid model from which you want to create a profile.
Rotate your solid model to the view you want to project.
Select a Layout tab. This displays the Page Setup - Layout dialog box.
Select the settings you want.
Choose OK to set tilemode to 0 and create a layout viewport.
Choose the Paper button from the Status bar to open the viewport in model space.
Enter SOLPROF on the command line, then select the solid model. Press ENTER to continue the command.
When prompted to 'Display hidden profile lines on separate layer', enter Y. This creates a layer named PH-XX (where XX equals the Handle of the layout viewport). Visible Profile lines will be placed on layer PV-XX.
When prompted to 'Project profile lines onto a plane', enter Y. This creates a 2D profile. If you answered No, it creates a 3D profile.
When prompted to 'Delete tangential edges', enter Y. (This conforms to conventional drafting standards.)
You can now use layer controls to freeze your solid model in the current viewport and select color and linetype options for the visible and hidden profile objects.
Flattening a 3D model to 2D using a DXB plotter file and the DXBIN command
Cannot use SOLDRAW command on clipped viewport
Slicing a 3D solid model
Creating a 3D solid model from intersecting solids"
Hope all this helps
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