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Generally, this awareness is brief; it's used for a joke or two and then never mentioned again.
Used this way, it's Lampshade Hanging as applied to Paratext. Compare with other metafictional devices, particularly Painting the Medium, which uses Paratext and artifacts to tell the story, and Reading Ahead in the Script which is exactly what it sounds like.
There are several formats for font description files, with Bitmap, True Type, Open Type, and Post Script being the most widely used (with being variants that can be embedded in web pages).
Bitmap fonts have glyphs as, well, bitmaps, at different point sizes.
Audiences are good at figuring out which elements of a work are on which side of the Fourth Wall.
No explanation is necessary for why our hero can hear a ringing telephone but not the movie's soundtrack, or why the space ship is menaced by the Negative Space Wedgie, but not by the opening credits drifting by outside the ship: it's something we accept as part of our Willing Suspension of Disbelief.
You can, if you wish, make your own fonts; it used to be a rather expensive hobby, but the availability of free tools like Font Forge , Adobe's Font Development Kit for Open Type, and the Web-based Font Struct has made it much cheaper.
Fourth-Wall Observer is what happens when a particular character has this on full-time and the rest do not.It's been a trend since the 1980s or so for fonts to be designed as coherent families, usually with serif, sans-serif, and monospaced variants, and sometimes with display versions as well.Font families have existed for a long time, since printers first combined italic and upright glyphs in the same documents and wanted them to look right together, but Donald Knuth's Computer Modern family was the first modern one and still the most overwhelmingly comprehensive (due to it being implemented in a fashion best described as "excessively flexible").'Well normally, yes' Sonic agreed, 'but at the moment we're characters in a book.Look, this talk is all getting very complicated, and we've got a real problem to deal with here.' Several members run to window and look out. Cut to studio: the members run to a door and open it.
"Font" used to refer to a complete set of characters of one typeface (set of characters that share a common design structure) in a specific size and style.