Base: rectangle / square
Alteration Element: inner line strokes
 
-Species:
• By structure (3): horizontal (TLOCRT H), vertical (TLOCRT V) and square
(TLOCRT SQ);
• By tracking (2): "regular" and "stacked" (Stack/STK);
• By space marking variation (2): "space" as the regular one and "stacked
space" as with consecutive vertical lines that represent space.

All "TLOCRT" variations have a "hikikomori" structure (all elements defining
the glyph are contained within the glyph's base). The advantage of "hikikomori"
fonts is that they don't require any reading utilities such as indicators,
grids, or markers as they are readable on their own.