project directory
╭────────────┼──────────────────┬─────────────┬────────╮
╵ ╵ ╵ ╵ ╵
app tpl pages app1 … appn
site.adp site.adp index.adp tcl code
app1.adp ╭───┬───╮ ╭─────┬────╮
╵ ╵ ╵ ╵ ╵ ╵
app2.adp app1 … appn app1 … appn
… index.adp index.adp
appn.adp page1.adp …
…