Home » Archimedes archive » Acorn User » AU 1997-08 B.adf » Regulars » starinfo/Hayward/MagicForm
starinfo/Hayward/MagicForm
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Acorn User » AU 1997-08 B.adf » Regulars |
| Filename: | starinfo/Hayward/MagicForm |
| Read OK: | ✔ |
| File size: | 1875 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Format of the Magic files used by !Magic.
To get at the Magic file Shift-double click on !Magic to open its application
directory, and then load the file called 'Magic' in to a text editor.
The format of this file is based on the format of the Unix file
identification tool 'file', the corresponding file on Unix systems is called
/etc/magic. Unix has no built in file type system, so files are identified by
extensions such as .tar.gz and by magic numbers, which are a few bytes of
information normally located at the start of the file. !Magic supports
[almost] a superset of the syntax of that file and can be used to detect a
large number of Risc OS and foreign file formats.
Lines starting with a '#' are comments and are ignored. By convention the
first line should contain '#! file', which is the magic number used to
identify the contents as a magic file. Comments should be entered liberally
throughout the file - they are stripped out when the file is parseed and do
not take up any memory or time except when Magic loads the file for the first
time. The file will only ever be parsed again if it changes, and is not
normally parsed on start-up.
Each basic file type starts with a line like the following:
0 string Archive\0 ArcFS archive
The 0 at the start of the line gives an offset in to the file at which data
will be looked for.
The second field (separated by white space) indicates what type of data is to
be looked for. The following types are suported:
byte A single byte is read from the file.
short Two bytes are read, in the normal byte order for that machine
(little endian on Acorns - least significant byte first).
leshort Identical to short.
beshort Like short, but the order of the two bytes are reversed.
long A word (4 bytes) are read from the file in little endian order.
lelong Identical to long.
belong Like long, but the four bytes are read in reverse order.
string A string is read from the file of up to the same length as
the string against which it is to be compared.
date Not implemented. Would otherwise load in a 4 byte Unix date.
This is not used in the NetBSD magic file that I have.
long types can be preceded by a u (eg ulong) in which case they are treated as
unsigned, all other types are treated as unsigned by default.
If the type is immediately followed by an &, then this introduces a mask with
which the file contents will be ANDed before comparisson, eg byte&42.
Expression following the & can start with 0, in which case they are treated
as octal values, 0x, in which case they are treated as hex, and any other
digit to indicate decimal.
This field is followed by whitespace (tabs, spaces, etc).
The next field contains the data against which the file should be matched. If
this field starts with <, > or = then the field is compared to the file
contents and matched if the file contents are less than, greater than or
equal to the rest of the field. If this symbol is ommmited, = is assumed.
These are the only three comparisson types available for strings.
If a numeric field starts with & the the match succeeds if all buts set in
the field's value are set in the file. ^ is similar, except that all bits
must be clear. Finally, if the field contains just x then anything will match
(this is useful when part of the file must be displayed in the file type
string). A similar effect for strings can be obtained with >\0
If a numeric type is required then the above should be immediately followed
by either a hex, octal or decimal value. Hex values start with 0x (eg 0xef),
octal values with 0 (eg 002) and decimal values with any other digit.
Strings can contain normal C escape sequences, so \\ must be used for \, \0
indicates ASCII NULL, \x32 hex 32, \03 octal 3, \n newline, \b backspace etc.
Any whitespace in the string must be escaped by preceding it with a \, and if
the string starts with <, = or > this too must be escaped, eg \<HTML
The last field contains the file type name. This may contain special fields
which will be replaced by whatever file contents have been matched (they are
printf style format commands). %s is replaced by a string, %d converts the
value to a decimal, %x to lower case hex and so on. %% must be used for
literal '%'s.
If the last field is ommited then it is assumed that the following line must also be true for the filetype to be a match. eg:
40 long 16
44 long 16
49 byte x IntMetrics font data, version %i
Ensures that the word 16 appears at offsets 40 and 44, and any byte at 49.
(The contents of this byte are then printed in place of the %i). This syntax
is not available in Unix magic, and was added because identifying many Risc
OS files requires more than idetifying most Unix files.
If subsequent lines start with a | then they are treated as alternatives to
the prvious line, eg:
2 string -lh0-
|2 string -lh1-
|2 string -lz4-
|2 string -lz5- LHarc 1.x archive data [%5s]
ensures that files with either -lh0- -lh1- -lz4- or -lz5- at offset 2 are
matched. This is also not available with Unix (NetBSD) magic, and is mainly
to reduce the number of duplicate menu entries appeearing in !Magic.
Lines starting with one or more >s are subtypes, and are only checked if the previous basic type was a match. eg:
0 string %! PostScript document text
>2 string PS-Adobe- conforming
>>11 string >\0 at level %.3s
>>>15 string EPS - type %s
>>>15 string Query - type %s
>>>15 string ExitServer - type %s
Indicates a main type of PostScript, which may optionally also be
'conforming' in which case 'conforming' is added to the PostScript type.
Sub-sbutypes are treated similarly.
Lastly, the first field, the offset, may be contained in brackets in which
case it is treated as indirect. eg (16) means use an offset read from the
file at offset 16. The offset read is, by default, a word but suffixing the
number by l b or s specifies a long, byte of short explicitly, eg (16b). A
further offset to be added to the offset read from the file can be specified,
eg (16+12) reads a word from offset 16, adds 12 and then uses that as an
offset in to the file. (16-12) is also valid. As with Unix magic, endianess
can not be specified.
00000000 46 6f 72 6d 61 74 20 6f 66 20 74 68 65 20 4d 61 |Format of the Ma| 00000010 67 69 63 20 66 69 6c 65 73 20 75 73 65 64 20 62 |gic files used b| 00000020 79 20 21 4d 61 67 69 63 2e 0a 0a 54 6f 20 67 65 |y !Magic...To ge| 00000030 74 20 61 74 20 74 68 65 20 4d 61 67 69 63 20 66 |t at the Magic f| 00000040 69 6c 65 20 53 68 69 66 74 2d 64 6f 75 62 6c 65 |ile Shift-double| 00000050 20 63 6c 69 63 6b 20 6f 6e 20 21 4d 61 67 69 63 | click on !Magic| 00000060 20 74 6f 20 6f 70 65 6e 20 69 74 73 20 61 70 70 | to open its app| 00000070 6c 69 63 61 74 69 6f 6e 0a 64 69 72 65 63 74 6f |lication.directo| 00000080 72 79 2c 20 61 6e 64 20 74 68 65 6e 20 6c 6f 61 |ry, and then loa| 00000090 64 20 74 68 65 20 66 69 6c 65 20 63 61 6c 6c 65 |d the file calle| 000000a0 64 20 27 4d 61 67 69 63 27 20 69 6e 20 74 6f 20 |d 'Magic' in to | 000000b0 61 20 74 65 78 74 20 65 64 69 74 6f 72 2e 0a 0a |a text editor...| 000000c0 54 68 65 20 66 6f 72 6d 61 74 20 6f 66 20 74 68 |The format of th| 000000d0 69 73 20 66 69 6c 65 20 69 73 20 62 61 73 65 64 |is file is based| 000000e0 20 6f 6e 20 74 68 65 20 66 6f 72 6d 61 74 20 6f | on the format o| 000000f0 66 20 74 68 65 20 55 6e 69 78 20 66 69 6c 65 0a |f the Unix file.| 00000100 69 64 65 6e 74 69 66 69 63 61 74 69 6f 6e 20 74 |identification t| 00000110 6f 6f 6c 20 27 66 69 6c 65 27 2c 20 74 68 65 20 |ool 'file', the | 00000120 63 6f 72 72 65 73 70 6f 6e 64 69 6e 67 20 66 69 |corresponding fi| 00000130 6c 65 20 6f 6e 20 55 6e 69 78 20 73 79 73 74 65 |le on Unix syste| 00000140 6d 73 20 69 73 20 63 61 6c 6c 65 64 0a 2f 65 74 |ms is called./et| 00000150 63 2f 6d 61 67 69 63 2e 20 55 6e 69 78 20 68 61 |c/magic. Unix ha| 00000160 73 20 6e 6f 20 62 75 69 6c 74 20 69 6e 20 66 69 |s no built in fi| 00000170 6c 65 20 74 79 70 65 20 73 79 73 74 65 6d 2c 20 |le type system, | 00000180 73 6f 20 66 69 6c 65 73 20 61 72 65 20 69 64 65 |so files are ide| 00000190 6e 74 69 66 69 65 64 20 62 79 0a 65 78 74 65 6e |ntified by.exten| 000001a0 73 69 6f 6e 73 20 73 75 63 68 20 61 73 20 2e 74 |sions such as .t| 000001b0 61 72 2e 67 7a 20 61 6e 64 20 62 79 20 6d 61 67 |ar.gz and by mag| 000001c0 69 63 20 6e 75 6d 62 65 72 73 2c 20 77 68 69 63 |ic numbers, whic| 000001d0 68 20 61 72 65 20 61 20 66 65 77 20 62 79 74 65 |h are a few byte| 000001e0 73 20 6f 66 0a 69 6e 66 6f 72 6d 61 74 69 6f 6e |s of.information| 000001f0 20 6e 6f 72 6d 61 6c 6c 79 20 6c 6f 63 61 74 65 | normally locate| 00000200 64 20 61 74 20 74 68 65 20 73 74 61 72 74 20 6f |d at the start o| 00000210 66 20 74 68 65 20 66 69 6c 65 2e 20 21 4d 61 67 |f the file. !Mag| 00000220 69 63 20 73 75 70 70 6f 72 74 73 0a 5b 61 6c 6d |ic supports.[alm| 00000230 6f 73 74 5d 20 61 20 73 75 70 65 72 73 65 74 20 |ost] a superset | 00000240 6f 66 20 74 68 65 20 73 79 6e 74 61 78 20 6f 66 |of the syntax of| 00000250 20 74 68 61 74 20 66 69 6c 65 20 61 6e 64 20 63 | that file and c| 00000260 61 6e 20 62 65 20 75 73 65 64 20 74 6f 20 64 65 |an be used to de| 00000270 74 65 63 74 20 61 0a 6c 61 72 67 65 20 6e 75 6d |tect a.large num| 00000280 62 65 72 20 6f 66 20 52 69 73 63 20 4f 53 20 61 |ber of Risc OS a| 00000290 6e 64 20 66 6f 72 65 69 67 6e 20 66 69 6c 65 20 |nd foreign file | 000002a0 66 6f 72 6d 61 74 73 2e 0a 0a 4c 69 6e 65 73 20 |formats...Lines | 000002b0 73 74 61 72 74 69 6e 67 20 77 69 74 68 20 61 20 |starting with a | 000002c0 27 23 27 20 61 72 65 20 63 6f 6d 6d 65 6e 74 73 |'#' are comments| 000002d0 20 61 6e 64 20 61 72 65 20 69 67 6e 6f 72 65 64 | and are ignored| 000002e0 2e 20 42 79 20 63 6f 6e 76 65 6e 74 69 6f 6e 20 |. By convention | 000002f0 74 68 65 0a 66 69 72 73 74 20 6c 69 6e 65 20 73 |the.first line s| 00000300 68 6f 75 6c 64 20 63 6f 6e 74 61 69 6e 20 27 23 |hould contain '#| 00000310 21 20 66 69 6c 65 27 2c 20 77 68 69 63 68 20 69 |! file', which i| 00000320 73 20 74 68 65 20 6d 61 67 69 63 20 6e 75 6d 62 |s the magic numb| 00000330 65 72 20 75 73 65 64 20 74 6f 0a 69 64 65 6e 74 |er used to.ident| 00000340 69 66 79 20 74 68 65 20 63 6f 6e 74 65 6e 74 73 |ify the contents| 00000350 20 61 73 20 61 20 6d 61 67 69 63 20 66 69 6c 65 | as a magic file| 00000360 2e 20 43 6f 6d 6d 65 6e 74 73 20 73 68 6f 75 6c |. Comments shoul| 00000370 64 20 62 65 20 65 6e 74 65 72 65 64 20 6c 69 62 |d be entered lib| 00000380 65 72 61 6c 6c 79 0a 74 68 72 6f 75 67 68 6f 75 |erally.throughou| 00000390 74 20 74 68 65 20 66 69 6c 65 20 2d 20 74 68 65 |t the file - the| 000003a0 79 20 61 72 65 20 73 74 72 69 70 70 65 64 20 6f |y are stripped o| 000003b0 75 74 20 77 68 65 6e 20 74 68 65 20 66 69 6c 65 |ut when the file| 000003c0 20 69 73 20 70 61 72 73 65 65 64 20 61 6e 64 20 | is parseed and | 000003d0 64 6f 0a 6e 6f 74 20 74 61 6b 65 20 75 70 20 61 |do.not take up a| 000003e0 6e 79 20 6d 65 6d 6f 72 79 20 6f 72 20 74 69 6d |ny memory or tim| 000003f0 65 20 65 78 63 65 70 74 20 77 68 65 6e 20 4d 61 |e except when Ma| 00000400 67 69 63 20 6c 6f 61 64 73 20 74 68 65 20 66 69 |gic loads the fi| 00000410 6c 65 20 66 6f 72 20 74 68 65 20 66 69 72 73 74 |le for the first| 00000420 0a 74 69 6d 65 2e 20 54 68 65 20 66 69 6c 65 20 |.time. The file | 00000430 77 69 6c 6c 20 6f 6e 6c 79 20 65 76 65 72 20 62 |will only ever b| 00000440 65 20 70 61 72 73 65 64 20 61 67 61 69 6e 20 69 |e parsed again i| 00000450 66 20 69 74 20 63 68 61 6e 67 65 73 2c 20 61 6e |f it changes, an| 00000460 64 20 69 73 20 6e 6f 74 0a 6e 6f 72 6d 61 6c 6c |d is not.normall| 00000470 79 20 70 61 72 73 65 64 20 6f 6e 20 73 74 61 72 |y parsed on star| 00000480 74 2d 75 70 2e 0a 0a 45 61 63 68 20 62 61 73 69 |t-up...Each basi| 00000490 63 20 66 69 6c 65 20 74 79 70 65 20 73 74 61 72 |c file type star| 000004a0 74 73 20 77 69 74 68 20 61 20 6c 69 6e 65 20 6c |ts with a line l| 000004b0 69 6b 65 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e |ike the followin| 000004c0 67 3a 0a 0a 30 09 73 74 72 69 6e 67 09 09 09 41 |g:..0.string...A| 000004d0 72 63 68 69 76 65 5c 30 09 41 72 63 46 53 20 61 |rchive\0.ArcFS a| 000004e0 72 63 68 69 76 65 0a 0a 54 68 65 20 30 20 61 74 |rchive..The 0 at| 000004f0 20 74 68 65 20 73 74 61 72 74 20 6f 66 20 74 68 | the start of th| 00000500 65 20 6c 69 6e 65 20 67 69 76 65 73 20 61 6e 20 |e line gives an | 00000510 6f 66 66 73 65 74 20 69 6e 20 74 6f 20 74 68 65 |offset in to the| 00000520 20 66 69 6c 65 20 61 74 20 77 68 69 63 68 20 64 | file at which d| 00000530 61 74 61 0a 77 69 6c 6c 20 62 65 20 6c 6f 6f 6b |ata.will be look| 00000540 65 64 20 66 6f 72 2e 20 0a 0a 54 68 65 20 73 65 |ed for. ..The se| 00000550 63 6f 6e 64 20 66 69 65 6c 64 20 28 73 65 70 61 |cond field (sepa| 00000560 72 61 74 65 64 20 62 79 20 77 68 69 74 65 20 73 |rated by white s| 00000570 70 61 63 65 29 20 69 6e 64 69 63 61 74 65 73 20 |pace) indicates | 00000580 77 68 61 74 20 74 79 70 65 20 6f 66 20 64 61 74 |what type of dat| 00000590 61 20 69 73 20 74 6f 0a 62 65 20 6c 6f 6f 6b 65 |a is to.be looke| 000005a0 64 20 66 6f 72 2e 20 54 68 65 20 66 6f 6c 6c 6f |d for. The follo| 000005b0 77 69 6e 67 20 74 79 70 65 73 20 61 72 65 20 73 |wing types are s| 000005c0 75 70 6f 72 74 65 64 3a 0a 0a 0a 62 79 74 65 20 |uported:...byte | 000005d0 20 20 20 20 20 20 20 41 20 73 69 6e 67 6c 65 20 | A single | 000005e0 62 79 74 65 20 69 73 20 72 65 61 64 20 66 72 6f |byte is read fro| 000005f0 6d 20 74 68 65 20 66 69 6c 65 2e 0a 73 68 6f 72 |m the file..shor| 00000600 74 20 20 20 20 20 20 20 54 77 6f 20 62 79 74 65 |t Two byte| 00000610 73 20 61 72 65 20 72 65 61 64 2c 20 69 6e 20 74 |s are read, in t| 00000620 68 65 20 6e 6f 72 6d 61 6c 20 62 79 74 65 20 6f |he normal byte o| 00000630 72 64 65 72 20 66 6f 72 20 74 68 61 74 20 6d 61 |rder for that ma| 00000640 63 68 69 6e 65 0a 20 20 20 20 20 20 20 20 20 20 |chine. | 00000650 20 20 28 6c 69 74 74 6c 65 20 65 6e 64 69 61 6e | (little endian| 00000660 20 6f 6e 20 41 63 6f 72 6e 73 20 2d 20 6c 65 61 | on Acorns - lea| 00000670 73 74 20 73 69 67 6e 69 66 69 63 61 6e 74 20 62 |st significant b| 00000680 79 74 65 20 66 69 72 73 74 29 2e 0a 6c 65 73 68 |yte first)..lesh| 00000690 6f 72 74 20 20 20 20 20 49 64 65 6e 74 69 63 61 |ort Identica| 000006a0 6c 20 74 6f 20 73 68 6f 72 74 2e 0a 62 65 73 68 |l to short..besh| 000006b0 6f 72 74 20 20 20 20 20 4c 69 6b 65 20 73 68 6f |ort Like sho| 000006c0 72 74 2c 20 62 75 74 20 74 68 65 20 6f 72 64 65 |rt, but the orde| 000006d0 72 20 6f 66 20 74 68 65 20 74 77 6f 20 62 79 74 |r of the two byt| 000006e0 65 73 20 61 72 65 20 72 65 76 65 72 73 65 64 2e |es are reversed.| 000006f0 0a 6c 6f 6e 67 20 20 20 20 20 20 20 20 41 20 77 |.long A w| 00000700 6f 72 64 20 28 34 20 62 79 74 65 73 29 20 61 72 |ord (4 bytes) ar| 00000710 65 20 72 65 61 64 20 66 72 6f 6d 20 74 68 65 20 |e read from the | 00000720 66 69 6c 65 20 69 6e 20 6c 69 74 74 6c 65 20 65 |file in little e| 00000730 6e 64 69 61 6e 20 6f 72 64 65 72 2e 0a 6c 65 6c |ndian order..lel| 00000740 6f 6e 67 20 20 20 20 20 20 49 64 65 6e 74 69 63 |ong Identic| 00000750 61 6c 20 74 6f 20 6c 6f 6e 67 2e 0a 62 65 6c 6f |al to long..belo| 00000760 6e 67 20 20 20 20 20 20 4c 69 6b 65 20 6c 6f 6e |ng Like lon| 00000770 67 2c 20 62 75 74 20 74 68 65 20 66 6f 75 72 20 |g, but the four | 00000780 62 79 74 65 73 20 61 72 65 20 72 65 61 64 20 69 |bytes are read i| 00000790 6e 20 72 65 76 65 72 73 65 20 6f 72 64 65 72 2e |n reverse order.| 000007a0 0a 73 74 72 69 6e 67 20 20 20 20 20 20 41 20 73 |.string A s| 000007b0 74 72 69 6e 67 20 69 73 20 72 65 61 64 20 66 72 |tring is read fr| 000007c0 6f 6d 20 74 68 65 20 66 69 6c 65 20 6f 66 20 75 |om the file of u| 000007d0 70 20 74 6f 20 74 68 65 20 73 61 6d 65 20 6c 65 |p to the same le| 000007e0 6e 67 74 68 20 61 73 0a 20 20 20 20 20 20 20 20 |ngth as. | 000007f0 20 20 20 20 74 68 65 20 73 74 72 69 6e 67 20 61 | the string a| 00000800 67 61 69 6e 73 74 20 77 68 69 63 68 20 69 74 20 |gainst which it | 00000810 69 73 20 74 6f 20 62 65 20 63 6f 6d 70 61 72 65 |is to be compare| 00000820 64 2e 0a 64 61 74 65 20 20 20 20 20 20 20 20 4e |d..date N| 00000830 6f 74 20 69 6d 70 6c 65 6d 65 6e 74 65 64 2e 20 |ot implemented. | 00000840 57 6f 75 6c 64 20 6f 74 68 65 72 77 69 73 65 20 |Would otherwise | 00000850 6c 6f 61 64 20 69 6e 20 61 20 34 20 62 79 74 65 |load in a 4 byte| 00000860 20 55 6e 69 78 20 64 61 74 65 2e 0a 20 20 20 20 | Unix date.. | 00000870 20 20 20 20 20 20 20 20 54 68 69 73 20 69 73 20 | This is | 00000880 6e 6f 74 20 75 73 65 64 20 69 6e 20 74 68 65 20 |not used in the | 00000890 4e 65 74 42 53 44 20 6d 61 67 69 63 20 66 69 6c |NetBSD magic fil| 000008a0 65 20 74 68 61 74 20 49 20 68 61 76 65 2e 0a 0a |e that I have...| 000008b0 6c 6f 6e 67 20 74 79 70 65 73 20 63 61 6e 20 62 |long types can b| 000008c0 65 20 70 72 65 63 65 64 65 64 20 62 79 20 61 20 |e preceded by a | 000008d0 75 20 28 65 67 20 75 6c 6f 6e 67 29 20 69 6e 20 |u (eg ulong) in | 000008e0 77 68 69 63 68 20 63 61 73 65 20 74 68 65 79 20 |which case they | 000008f0 61 72 65 20 74 72 65 61 74 65 64 20 61 73 0a 75 |are treated as.u| 00000900 6e 73 69 67 6e 65 64 2c 20 61 6c 6c 20 6f 74 68 |nsigned, all oth| 00000910 65 72 20 74 79 70 65 73 20 61 72 65 20 74 72 65 |er types are tre| 00000920 61 74 65 64 20 61 73 20 75 6e 73 69 67 6e 65 64 |ated as unsigned| 00000930 20 62 79 20 64 65 66 61 75 6c 74 2e 0a 0a 49 66 | by default...If| 00000940 20 74 68 65 20 74 79 70 65 20 69 73 20 69 6d 6d | the type is imm| 00000950 65 64 69 61 74 65 6c 79 20 66 6f 6c 6c 6f 77 65 |ediately followe| 00000960 64 20 62 79 20 61 6e 20 26 2c 20 74 68 65 6e 20 |d by an &, then | 00000970 74 68 69 73 20 69 6e 74 72 6f 64 75 63 65 73 20 |this introduces | 00000980 61 20 6d 61 73 6b 20 77 69 74 68 0a 77 68 69 63 |a mask with.whic| 00000990 68 20 74 68 65 20 66 69 6c 65 20 63 6f 6e 74 65 |h the file conte| 000009a0 6e 74 73 20 77 69 6c 6c 20 62 65 20 41 4e 44 65 |nts will be ANDe| 000009b0 64 20 62 65 66 6f 72 65 20 63 6f 6d 70 61 72 69 |d before compari| 000009c0 73 73 6f 6e 2c 20 65 67 20 62 79 74 65 26 34 32 |sson, eg byte&42| 000009d0 2e 0a 45 78 70 72 65 73 73 69 6f 6e 20 66 6f 6c |..Expression fol| 000009e0 6c 6f 77 69 6e 67 20 74 68 65 20 26 20 63 61 6e |lowing the & can| 000009f0 20 73 74 61 72 74 20 77 69 74 68 20 30 2c 20 69 | start with 0, i| 00000a00 6e 20 77 68 69 63 68 20 63 61 73 65 20 74 68 65 |n which case the| 00000a10 79 20 61 72 65 20 74 72 65 61 74 65 64 0a 61 73 |y are treated.as| 00000a20 20 6f 63 74 61 6c 20 76 61 6c 75 65 73 2c 20 30 | octal values, 0| 00000a30 78 2c 20 69 6e 20 77 68 69 63 68 20 63 61 73 65 |x, in which case| 00000a40 20 74 68 65 79 20 61 72 65 20 74 72 65 61 74 65 | they are treate| 00000a50 64 20 61 73 20 68 65 78 2c 20 61 6e 64 20 61 6e |d as hex, and an| 00000a60 79 20 6f 74 68 65 72 0a 64 69 67 69 74 20 74 6f |y other.digit to| 00000a70 20 69 6e 64 69 63 61 74 65 20 64 65 63 69 6d 61 | indicate decima| 00000a80 6c 2e 0a 0a 54 68 69 73 20 66 69 65 6c 64 20 69 |l...This field i| 00000a90 73 20 66 6f 6c 6c 6f 77 65 64 20 62 79 20 77 68 |s followed by wh| 00000aa0 69 74 65 73 70 61 63 65 20 28 74 61 62 73 2c 20 |itespace (tabs, | 00000ab0 73 70 61 63 65 73 2c 20 65 74 63 29 2e 0a 0a 54 |spaces, etc)...T| 00000ac0 68 65 20 6e 65 78 74 20 66 69 65 6c 64 20 63 6f |he next field co| 00000ad0 6e 74 61 69 6e 73 20 74 68 65 20 64 61 74 61 20 |ntains the data | 00000ae0 61 67 61 69 6e 73 74 20 77 68 69 63 68 20 74 68 |against which th| 00000af0 65 20 66 69 6c 65 20 73 68 6f 75 6c 64 20 62 65 |e file should be| 00000b00 20 6d 61 74 63 68 65 64 2e 20 49 66 0a 74 68 69 | matched. If.thi| 00000b10 73 20 66 69 65 6c 64 20 73 74 61 72 74 73 20 77 |s field starts w| 00000b20 69 74 68 20 3c 2c 20 3e 20 6f 72 20 3d 20 74 68 |ith <, > or = th| 00000b30 65 6e 20 74 68 65 20 66 69 65 6c 64 20 69 73 20 |en the field is | 00000b40 63 6f 6d 70 61 72 65 64 20 74 6f 20 74 68 65 20 |compared to the | 00000b50 66 69 6c 65 0a 63 6f 6e 74 65 6e 74 73 20 61 6e |file.contents an| 00000b60 64 20 6d 61 74 63 68 65 64 20 69 66 20 74 68 65 |d matched if the| 00000b70 20 66 69 6c 65 20 63 6f 6e 74 65 6e 74 73 20 61 | file contents a| 00000b80 72 65 20 6c 65 73 73 20 74 68 61 6e 2c 20 67 72 |re less than, gr| 00000b90 65 61 74 65 72 20 74 68 61 6e 20 6f 72 0a 65 71 |eater than or.eq| 00000ba0 75 61 6c 20 74 6f 20 74 68 65 20 72 65 73 74 20 |ual to the rest | 00000bb0 6f 66 20 74 68 65 20 66 69 65 6c 64 2e 20 49 66 |of the field. If| 00000bc0 20 74 68 69 73 20 73 79 6d 62 6f 6c 20 69 73 20 | this symbol is | 00000bd0 6f 6d 6d 6d 69 74 65 64 2c 20 3d 20 69 73 20 61 |ommmited, = is a| 00000be0 73 73 75 6d 65 64 2e 0a 54 68 65 73 65 20 61 72 |ssumed..These ar| 00000bf0 65 20 74 68 65 20 6f 6e 6c 79 20 74 68 72 65 65 |e the only three| 00000c00 20 63 6f 6d 70 61 72 69 73 73 6f 6e 20 74 79 70 | comparisson typ| 00000c10 65 73 20 61 76 61 69 6c 61 62 6c 65 20 66 6f 72 |es available for| 00000c20 20 73 74 72 69 6e 67 73 2e 0a 0a 49 66 20 61 20 | strings...If a | 00000c30 6e 75 6d 65 72 69 63 20 66 69 65 6c 64 20 73 74 |numeric field st| 00000c40 61 72 74 73 20 77 69 74 68 20 26 20 74 68 65 20 |arts with & the | 00000c50 74 68 65 20 6d 61 74 63 68 20 73 75 63 63 65 65 |the match succee| 00000c60 64 73 20 69 66 20 61 6c 6c 20 62 75 74 73 20 73 |ds if all buts s| 00000c70 65 74 20 69 6e 0a 74 68 65 20 66 69 65 6c 64 27 |et in.the field'| 00000c80 73 20 76 61 6c 75 65 20 61 72 65 20 73 65 74 20 |s value are set | 00000c90 69 6e 20 74 68 65 20 66 69 6c 65 2e 20 5e 20 69 |in the file. ^ i| 00000ca0 73 20 73 69 6d 69 6c 61 72 2c 20 65 78 63 65 70 |s similar, excep| 00000cb0 74 20 74 68 61 74 20 61 6c 6c 20 62 69 74 73 0a |t that all bits.| 00000cc0 6d 75 73 74 20 62 65 20 63 6c 65 61 72 2e 20 46 |must be clear. 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