Tl;dr

The software product engineering line

Software we build for consumer use, as opposed to systems software, is considered to be a part of software product engineering line with this brand name. The style is "tl" followed by colon, dash, or semicolon, followed by a square bracketed specific product name.

The Look and Feel of the apps in the line

The theme, style, or graphical design concept of the look and feel package is low fidelity wireframe mock, filled with active working content instead of crossed of static images.