Filename character restrictions

Binary	Oct	Dec	Hex	Glyph
010 0000	040	32	20	␠	yes
010 0001	041	33	21	!	NO
010 0010	042	34	22	"	NO
010 0011	043	35	23	#	NO
010 0100	044	36	24	$	yes
010 0101	045	37	25	%	NO
010 0110	046	38	26	&	yes
010 0111	047	39	27	'	yes
010 1000	050	40	28	(	yes
010 1001	051	41	29	)	yes
010 1010	052	42	2A	*	NO
010 1011	053	43	2B	+	yes
010 1100	054	44	2C	,	yes
010 1101	055	45	2D	-	yes
010 1110	056	46	2E	.	yes
010 1111	057	47	2F	/	NO
011 0000	060	48	30	0	yes
011 0001	061	49	31	1	yes
011 0010	062	50	32	2	yes
011 0011	063	51	33	3	yes
011 0100	064	52	34	4	yes
011 0101	065	53	35	5	yes
011 0110	066	54	36	6	yes
011 0111	067	55	37	7	yes
011 1000	070	56	38	8	yes
011 1001	071	57	39	9	yes
011 1010	072	58	3A	:	NO
011 1011	073	59	3B	;	NO
011 1100	074	60	3C	<	NO
011 1101	075	61	3D	=	NO
011 1110	076	62	3E	>	NO
011 1111	077	63	3F	?	NO
Binary	Oct	Dec	Hex	Glyph
100 0000	100	64	40	@	NO
100 0001	101	65	41	A	yes
100 0010	102	66	42	B	yes
100 0011	103	67	43	C	yes
100 0100	104	68	44	D	yes
100 0101	105	69	45	E	yes
100 0110	106	70	46	F	yes
100 0111	107	71	47	G	yes
100 1000	110	72	48	H	yes
100 1001	111	73	49	I	yes
100 1010	112	74	4A	J	yes
100 1011	113	75	4B	K	yes
100 1100	114	76	4C	L	yes
100 1101	115	77	4D	M	yes
100 1110	116	78	4E	N	yes
100 1111	117	79	4F	O	yes
101 0000	120	80	50	P	yes
101 0001	121	81	51	Q	yes
101 0010	122	82	52	R	yes
101 0011	123	83	53	S	yes
101 0100	124	84	54	T	yes
101 0101	125	85	55	U	yes
101 0110	126	86	56	V	yes
101 0111	127	87	57	W	yes
101 1000	130	88	58	X	yes
101 1001	131	89	59	Y	yes
101 1010	132	90	5A	Z	yes
101 1011	133	91	5B	[	NO
101 1100	134	92	5C	\	NO
101 1101	135	93	5D	]	NO
101 1110	136	94	5E	^	NO
101 1111	137	95	5F	_	yes
Binary	Oct	Dec	Hex	Glyph
110 0000	140	96	60	`	NO
110 0001	141	97	61	a	yes
110 0010	142	98	62	b	yes
110 0011	143	99	63	c	yes
110 0100	144	100	64	d	yes
110 0101	145	101	65	e	yes
110 0110	146	102	66	f	yes
110 0111	147	103	67	g	yes
110 1000	150	104	68	h	yes
110 1001	151	105	69	i	yes
110 1010	152	106	6A	j	yes
110 1011	153	107	6B	k	yes
110 1100	154	108	6C	l	yes
110 1101	155	109	6D	m	yes
110 1110	156	110	6E	n	yes
110 1111	157	111	6F	o	yes
111 0000	160	112	70	p	yes
111 0001	161	113	71	q	yes
111 0010	162	114	72	r	yes
111 0011	163	115	73	s	yes
111 0100	164	116	74	t	yes
111 0101	165	117	75	u	yes
111 0110	166	118	76	v	yes
111 0111	167	119	77	w	yes
111 1000	170	120	78	x	yes
111 1001	171	121	79	y	yes
111 1010	172	122	7A	z	yes
111 1011	173	123	7B	{	NO
111 1100	174	124	7C	|	NO
111 1101	175	125	7D	}	NO
111 1110	176	126	7E	~

Filename syntaxes (or name formation) in Trainz assets are heavily restricted for compatibility reasons. As filenames are not displayed to end-users, there is no need for localization support (File and directory paths) or other format class characters.

Specifically, filenames within Trainz must obey the following rules:

1. Filenames must not begin with a space (' '), a period ('.'), or a tilde ('~').
2. Filenames must be at least one character long.
3. Filenames must not end with a space (' ').
4. Filenames should be kept to a reasonable length. No fixed length is currently enforced, however if compatibility issues arise at a later date N3V Games may add length limits.
5. Smart quotes, accents, umlauts and other non-ASCII characters are disallowed.
6. Filenames must consist of the following ASCII characters only:

'a' through 'z'	lowercase letters
'A' through 'Z'	uppercase letters
'0' through '9'	numbers
hyphen	' - '
ampersand	' & '
comma	' , '
plus	' + '
apostrophe	'  '  '
period	' . '
underscore	' _ '
dollar	' $ '
space	'   '
open parenthesis	' ( '
closed parenthesis	' ) '
tilde	' ~ '