Dear list, I have the following sample: \showgrid \setuplayout[grid=yes] \starttext \startoutputstream[one] \startcolor[red] \dorecurse{4}{\input knuth\par\pushoutputstream} \stopcolor \stopoutputstream \startoutputstream[two] \startcolor[green] \dorecurse{4}{\input zapf\par\pushoutputstream} \stopcolor \stopoutputstream \null\page \synchronizestreams[one,two] \flushoutputstream[one] \page\flushoutputstream[two] \stoptext With MkIV, stream one is always a line before stream two (11-12, 21-22, 31-32). With LMTX, the output is less reliable, since stream one is one, two and three lines before stream two (11-12, 21-23, 31-34). In some cases, having synced streams is highly desirable. Besides the output difference in LMTX, is there a way to get fully synced streams? Many thanks for your help, Pablo