There are a lot of template engines already. Why another one? Once a long ago I worked with some spreadsheet-oriented template engine based on table sections, which I considered to be very clear and convenient.
After some time, when I started to write CGI and PHP programs, I remembered this template engine not once. And at last I decided to write something similar to it. Now it is far away from that prototype - it supports not only variables (placeholders), but options, commands, nesting, etc.
I consider it to be very simple and convenient. You can try it too.
1.5.5