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Define the font to be 'fontname' with the optional font switch character 'switchchar'. 'Fontname' is any of the 160 different font names acceptable to <PLOT79>, or alternatively, verbose descriptions of the 20 principal font names: Block-ASCII Cartographic-Greek Cartographic-Roman Complex-Cyrillic Complex-Greek Complex-Italic Complex-Roman Complex-Script Duplex-Roman Gothic-English Gothic-German Gothic-Italian Indexical-Greek Indexical-Italic Indexical-Roman Simplex-ASCII Simplex-Greek Simplex-Roman Simplex-Script Triplex-Roman The default font is Complex-Roman, and the default switch character is a blank, which disables font switching. Up to five fonts can be in effect at one time, with the most-recently specified one being the current font. By default, the characters "<" and ">" switch to upper- and lower-case respectively; if they are to be used as themselves, they must be doubled. The principal fonts currently available are as follows (the parenthesized number following each name is the grid size): UCKR1 - Cartographic Roman (9) UCKG1 - Cartographic Greek (9) UCIR1 - Indexical Roman (13) UCII1 - Indexical Roman Italic (13) UCIG1 - Indexical Greek (13) UCSR1 - Simplex Roman (21) UCSS1 - Simplex Roman Script (21) UCSG1 - Simplex Greek (21) UCCR1 - Complex Normal Roman (21) UCCI1 - Complex Normal Roman Italic (21) UCCG1 - Complex Normal Greek (21) UCCS1 - Complex Script (21) UCDR1 - Duplex Roman (21) UCTR1 - Triplex Roman (21) UCGE1 - Gothic English (21) UCGI1 - Gothic Italian (21) UCGG1 - Gothic German (21) UCCC1 - Complex Cyrillic (21) UCSA1 - Simplex ASCII (11) UCBA1 - Block ASCII (11) The five-character font codes are constructed from a 2-character case variant 'UC' or 'LC', a 2-character font acronym, and a 1-digit special-character variant code 1, 2, 3, or 4. The LCxyn fonts are primarily of use in applications where lower-case input is unavailable, for they convert upper-case letters to lower-case. The UCxyn fonts preserve input letter case, except where changed by a case switch character.