Is the LIST command enough to troubleshoot CAD geometry?

[indiancad]

The LIST command is useful when I need to inspect an entity’s properties, such as its coordinates, length, radius, or object type. It can help when a drawing looks correct but I need to verify the actual geometry.

However, one limitation is that LIST reports geometric data rather than explaining why an operation failed. For example, if a 3D Boolean operation fails, the LIST output alone may not reveal whether the problem is caused by intersecting geometry, invalid solids, or another modeling issue.

When troubleshooting a difficult 3D modeling problem, how far do you rely on LIST before switching to other inspection methods?

[Paul Li]

FYI, I used to run the LIST command quite a bit to give me information about the object(s) in question.  But with the introduction of the Properties command in AutoCAD 2000, I slowly got used to leaving the Properties window opened/docked in the drawing area. Then as an object is selected, it's "properties" would automatically be filled out for me to inspect inside the Properties window. There's no need to run an extra command sequence like the LIST command which then would have to display the information on on a separate Text screen. In addition, the Properties window makes it possible for you to enter new values into those property items that can be modified. 

Edited yesterday at 06:09 AM by Paul Li

[indiancad]

16 minutes ago, Paul Li said:

FYI, I used to run the LIST command quite a bit to give me information about the object(s) in question.  But with the introduction of the Properties command in AutoCAD 2000, I slowly got used to leaving the Properties window opened/docked in the drawing area. Then as an object is selected, it's "properties" would automatically be filled out for me to inspect inside the Properties window. There's no need to run an extra command sequence like the LIST command which then would have to display the information on on a separate Text screen. In addition, the Properties window makes it possible for you to enter new values into those property items that can be modified. 

AutoCADtutorials

 

That makes sense! Keeping Properties open is definitely more convenient when checking and changing values repeatedly. I guess LIST is still useful when you want a quick text-based report of an entity, but Properties is more practical for everyday editing.

[SLW210]

Best way to troubleshoot an issue in general is to watch the commandline and history, or in my case, the Text Window. I keep as much screen as possible when working on something, so no commandline ever. Dual screens I can have the Text Window open on the other monitor. Also, Properties can be opened with a Right-Click, so need need for that always on screen, mine is always docked.

 

Is this question about 3D modelling only or just in general?

 

If it's a geometry issue a close inspection usually can detect that if nothing shows in the commandline history. For 3D SECTIONPLANE can check for issues.

 

LIST is handy in some cases, I sometimes use it for LISP uses, but I have various DUMP LISPs too, those can also help detect some issues.

 

If it is a drawing I started, there usually should be no issues with geometry, like open gaps where you expect closed shapes, etc. so exactly what specific issues are you thinking of?

 

LIST is probably behind a look at the Text Window and history, Properties, and a quick glance. But I usually use LIST for a way to quickly copy and paste that information and/or for double checking LISP results et. al.

[BIGAL]

Dont forget about DUMPIT.lsp that shows the properties via VL. I use it often reveals lots of info.  DumpIt.LSP

[indiancad]

On 10/14/2026 at 3:50 PM, SLW210 said:

Best way to troubleshoot an issue in general is to watch the commandline and history, or in my case, the Text Window. I keep as much screen as possible when working on something, so no commandline ever. Dual screens I can have the Text Window open on the other monitor. Also, Properties can be opened with a Right-Click, so need need for that always on screen, mine is always docked.

 

Is this question about 3D modelling only or just in general?

 

If it's a geometry issue a close inspection usually can detect that if nothing shows in the commandline history. For 3D SECTIONPLANE can check for issues.

 

LIST is handy in some cases, I sometimes use it for LISP uses, but I have various DUMP LISPs too, those can also help detect some issues.

 

If it is a drawing I started, there usually should be no issues with geometry, like open gaps where you expect closed shapes, etc. so exactly what specific issues are you thinking of?

 

LIST is probably behind a look at the Text Window and history, Properties, and a quick glance. But I usually use LIST for a way to quickly copy and paste that information and/or for double checking LISP results et. al.

Your point about checking the command history first makes sense, especially when an operation fails. I also like the idea of using LIST to copy and verify entity data when working with LISP. It seems the best tool really depends on what you're trying to diagnose.

[indiancad]

13 hours ago, BIGAL said:

Dont forget about DUMPIT.lsp that shows the properties via VL. I use it often reveals lots of info.  DumpIt.LSP

Thanks for mentioning DUMPIT.lsp! I haven’t explored that approach much. Getting more detailed entity information through Visual LISP sounds useful, especially when troubleshooting or checking results from custom routines.