Anybody know how to detect whether a drawing is using CTB or STB tables? I cannot find a system variable or other parameter for this, but I know it must be obtainable with LSP or V-LSP or VBA. I just can't seem to find it! Background: my shop uses CTBs. Someone decided to try out STBs on several of our drawings. I don't know which ones and I'm using a script to plot all my drawings to DWFs. The "Plot" command in the script answers the detailed plot configuration with a CTB file name, which fails if the drawing is in STB mode. I tried (command "convertpstyles") and (command "convertpstyles" "CTB"), but, depending on which type of plot table is in effect, I get a message and therefore a script failure. Yikes!