User talk:121RAB006

Hello, I'm Cwmhiraeth. I wanted to let you know that I undid one or more of your recent contributions to 4D BIM because it did not appear constructive. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks! Please do not add information in foreign languages to this English language Wikipedia. Cwmhiraeth (talk) 13:31, 8 January 2015 (UTC)