Features Obsoleted in IDL 5.3

The following features were present in IDL Version 5.2 but became obsolete in IDL Version 5.3.

The following arguments and keywords are obsolete and should not be used in new IDL code.

Table J-58: Routines Obsoleted in IDL 5.3
Routine	Replaced by	.pro File?
HDF_DFSD_* Routines	HDF_SD_* Routines
RSTRPOS	STRPOS, /REVERSE_SEARCH	`rstrpos.pro`
STR_SEP	STRSPLIT for single character delimiters STRSPLIT, /REGEX for longer delimiters	`str_sep.pro`

Table J-59: Arguments and Keywords Obsoleted in IDL 5.3

Table J-59: Arguments and Keywords Obsoleted in IDL 5.3
Routine	Argument or Keyword	Description
BYTEORDER	DTOGFLOAT keyword	This keyword was available only on the VMS platform
BYTEORDER	GFLOATTOD keyword	This keyword was available only on the VMS platform.
CALL_EXTERNAL	DEFAULT keyword	This keyword was ignored on non-VMS platforms.
	PORTABLE keyword	This keyword was ignored on non-VMS platforms.
	VAX_FLOAT keyword	This keyword was available only on the VMS platform.
DEVICE	DEPTH keyword	This keyword was available only on the VMS platform.
DEVICE	FONT keyword	This keyword was replaced by the SET_FONT keyword.
DOC_LIBRARY	FILE keyword	This keyword was ignored on non-VMS platforms.
	PATH keyword	This keyword was ignored on non-VMS platforms.
	OUTPUTS keyword	This keyword was available only on the VMS platform.
LINKIMAGE	DEFAULT keyword	This keyword was ignored on non-VMS platforms.
MAKE_DLL	VAX_FLOAT keyword	This keyword was ignored on non-VMS platforms.
OPEN	Record_Length argument	This argument was ignored on non-VMS platforms.
	BLOCK keyword	This keyword was ignored on non-VMS platforms.
	DEFAULT keyword	This keyword was ignored on non-VMS platforms.
	EXTENDSIZE keyword	This keyword was ignored on non-VMS platforms.
	FIXED keyword	This keyword was ignored on non-VMS platforms.
	FORTRAN keyword	This keyword was ignored on non-VMS platforms.
	INITIALSIZE keyword	This keyword was ignored on non-VMS platforms.
OPEN, continued	KEYED keyword	This keyword was ignored on non-VMS platforms.
	LIST keyword	This keyword was ignored on non-VMS platforms.
	NONE keyword	This keyword was ignored on non-VMS platforms.
	PRINT keyword	This keyword was ignored on non-VMS platforms.
	SEGMENTED keyword	This keyword was ignored on non-VMS platforms.
	SHARED keyword	This keyword was ignored on non-VMS platforms.
	STREAM keyword	This keyword was ignored on non-VMS platforms.
	SUBMIT keyword	This keyword was ignored on non-VMS platforms.
	SUPERSEDE keyword	This keyword was ignored on non-VMS platforms.
	TRUNCATE_ON_CLOSE keyword	This keyword was ignored on non-VMS platforms.
	UDF_BLOCK keyword	This keyword was ignored on non-VMS platforms.
	VARIABLE keyword	This keyword was ignored on non-VMS platforms.
PRINT/PRINTF	REWRITE keyword	This keyword was ignored on non-VMS platforms.
READ/READF	KEY_ID keyword	This keyword was ignored on non-VMS platforms.
	KEY_MATCH keyword	This keyword was ignored on non-VMS platforms.
	KEY_VALUE keyword	This keyword was ignored on non-VMS platforms.
READ_TIFF	UNSIGNED keyword	This keyword became obsolete when IDL began supporting an unsigned 16-bit integer data type.
READU	KEY_ID keyword	This keyword was ignored on non-VMS platforms.
	KEY_MATCH keyword	This keyword was ignored on non-VMS platforms.
	KEY_VALUE keyword	This keyword was ignored on non-VMS platforms.
SAVE	XDR keyword	IDL always writes XDR files.
SPAWN	NOCLISYM keyword	This keyword was ignored on non-VMS platforms.
	NOLOGNAM keyword	This keyword was ignored on non-VMS platforms.
	NOTIFY keyword	This keyword was ignored on non-VMS platforms.
WRITEU	REWRITE keyword	This keyword was ignored on non-VMS platforms.