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Hi, I'd appreciated some help with the following problem. How can I stop the following code generating an error on calling \placecontent from a product? In the test case I have files: env-test, prd-test, cmp-test. \startenvironment [env-test] \def\dostartArticle[#1]% generate article header with {\getgparameters[my][#1] \chapter{\mytitle} } \def\dostopArticle{% \page} \def\startArticle{\dosingleempty\dostartArticle} \def\stopArticle{\dosingleempty\dostopArticle} \stopenvironment \startproduct prd-test \environment ../env-test \placecontent %fails with Undefined control sequence \mytitle \component cmp-test \stopproduct \startcomponent[cmp-test] \product prd-test \environment env-test %\placecontent %works here \startArticle[title={Into the unknown}, author={A. U. Thor}] %author parameter unused in test, just example of what I expect \startArticle to look like \input knuth \stopArticle \stopcomponent Any ideas how to make this work? TIA, Elliot