This sounds similar to the old Server Side Includes [1] . In the 90s I was using SSI to build dynamic, but static sites -- header -- -- hierarchal javscript

This sounds similar to the old Server Side Includes [1] . In the 90s I was using SSI to build dynamic, but static sites -- header -- -- hierarchal javscript menuing -- -- content -- -- footer -- -- tail -- [1] https://en.wikipedia.org/wiki/Server_Side_Includes https://en.wikipedia.org/wiki/Server_Side_Includes