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 a low fidelity wireframe mock, filled with active working content instead of crossed out static images.