+\subfile{top/4iot} % TOP for the IoT
+\subfile{top/lang} % mTask DSL
+\subfile{top/int} % Integration with iTask
+\subfile{top/imp} % Implementation
+\subfile{top/green} % Green computing
+
+\part{Tiered vs.\ Tierless Programming}%
+\label{prt:tvt}
+\subfile{tvt/tvt} % Could Tierless Languages Reduce IoT Development Grief?