build: add the SIBO SDK

2026-07-06 18:01:36 +01:00
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+This directory contains demonstration font source (.fsc) files.
+
+Use the program wsfcomp.exe to generate font (.fon) files. For example,
+to compile diary.fsc, producing diary.fon, just type:
+
+    wsfcomp diary
+
+See FONT.PRJ (a plain text file) for an annotated list of the files in
+this directory.
+
+A font source file contains a header section followed by patterns
+which make up the font, as in the following extract from the
+beginning of a font source file:
+
+    *name System mono
+    *descent 2
+    *height 10
+    *maxwid 7
+    *flag ascii
+    *flag cp850
+
+    *char 28
+    
+    100000000000
+    100001100000
+    100001100000
+    101111111100
+    100111111000
+    110011110111
+    000001100000
+    000000000000
+    111111111111
+    100000000000
+
+    0000000
+    0000000
+    0001000
+    0001100
+    1111110
+    1111110
+    0001100
+    0001000
+    0000000
+    0000000
+
+    0000000
+    0000011
+    0000011
+    0010011
+    0110011
+    1111111
+    1111111
+    0110000
+    0010000
+    0000000
+
+The keywords have the following meanings:
+-----------------------------------------
+
+*name           The font name (maximum length 16 characters)
+
+*descent <n>    The descent for the font
+
+*height <n>     The height for the font
+
+*maxwid <n>     Not the real maximum width, but the width of the
+                widest normal character
+
+*flag           Some informational flags
+
+*char <n>       Skip all characters up to the specified code. 
+                Character codes start at 0 and follow sequentially
+                until the next *char statement
+
+The keyword "*special 1" may also be present, to specify a font
+suitable for "fast" blitting onto the screen.  If present, this
+keyword must come before the *height statement.  ("Fast" fonts must
+have all their widths less than 9 pixels.)
+
+If the height of a character defined is less than that defined in the
+header, blank rows are added at the top.
+
+Possible values for "*flag" (each one defined on its own line) are
+"ascii", "cp850", "bold", "italic", and "serif".
+
+For more details about fonts, see the 'Text fonts' sections of both
+the 'Introduction' and 'Graphics Output' chapters of the WSERV
+Reference manual.
+
+Note that only the first letter of keywords and flagnames is
+significant.  Thus "*max_width" and "*maxwid" have the same effect.
+
+One tip when editing .fsc files is to temporarily change all '1's
+into graphics square characters (ascii 219, say), and all '0's into
+dots.  Then change them back when you're finished.