Validating Geometry
Detailed checks of geometry and topology can be performed using the validate command:

Validate {Body|Volume|Surface|Curve|Vertex|Group} <id_range>
Validate {Volume|Surface|Curve|Vertex} <range> mesh

The Validate {...} mesh command performs a connectivity check of the mesh elements to determine the validity of the mesh.

More rigorous checking can be accomplished with the validate geometry commands by specifying a higher check level. Use the following command to accomplish this:

set AcisOption Integer 'check_level' <integer> where integer is one of the following: 10 = Fast error checks 

20 = Level 10 checks plus slower error checks (default)

30 = Level 20 checks plus D-Cubed curve and surface checks 

40 = Level 30 checks plus fast warning checks 

50 = Level 40 checks plus slower warning checks 

60 = Level 50 checks plus slow edge convexity change point checks 

70 = Level 60 checks plus face/face intersection checks

You can also get more detailed output from the validate command with (the default is off): set AcisOption Integer 'check_output' on Note that some of the ids listed in the output of the validate command are currently meaningless, e.g. those for coedges.

The validate command can also check for consistent surface normals and return a list of offending surfaces. The syntax for the command is as follows:

Validate [Body] <body_id> Normal [Reference [Surface] <surface_id>] [Reverse]

Using the "reference" keyword, a reference surface is compared to the normal consistency of all other specified surfaces. Inconsistent surfaces can be reversed using the "reverse" keyword.