Old UNIX utils

In article <Pine.NEB.4.64.1210010402520.3628 at otaku.freeshell.org>, Alexey Toptygin <alexeyt at freeshell.org> writes: See the source at: <http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/troff/troff.d/ta.c> 42 /* 43 * drive hp2621 terminal 44 * just to see stuff quickly. like troff -a 45 */ 46 47 /* 48 output language from troff: 49 all numbers are character strings 50 51 sn size in points 52 fn font as number from 1-n 53 cx ascii character x 54 Cxyz funny char xyz. terminated by white space 55 Hn go to absolute horizontal position n 56 Vn go to absolute vertical position n (down is positive) 57 hn go n units horizontally (relative) 58 vn ditto vertically 59 nnc move right nn (exactly 2 digits!), then print c 60 (this wart is an optimization that shrinks output file size 61 about 35% and run-time about 15% while preserving ascii-ness) 62 w paddable word space - no action needed 63 nb a end of line (information only -- no action needed) 64 b = space before line, a = after 65 pn begin page n 66 #...\n comment 67 Dt ...\n draw operation 't': 68 Dl x y line from here by x,y 69 Dc d circle of diameter d with left side here 70 De x y ellipse of axes x,y with left side here 71 Da x y u v arc counter-clockwise from here to u,v from center 72 with center x,y from here 73 D~ x y x y ... wiggly line by x,y then x,y ... 74 x ...\n device control functions: 75 x i init 76 x T s name of device is s 77 x r n h v resolution is n/inch 78 h = min horizontal motion, v = min vert 79 x p pause (can restart) 80 x s stop -- done for ever 81 x t generate trailer 82 x f n s font position n contains font s 83 x H n set character height to n 84 x S n set character slant to n 85 86 Subcommands like "i" are often spelled out like "init". 87 */ -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>