diff --git a/runtime/syntax/tsalt.vim b/runtime/syntax/tsalt.vim
new file mode 100644
index 0000000..56f1755
--- /dev/null
+++ b/runtime/syntax/tsalt.vim
@@ -0,0 +1,214 @@
+" Vim syntax file
+" Language:	Telix (Modem Comm Program) SALT Script
+" Maintainer:	Sean M. McKee <mckee@misslink.net>
+" Last Change:	2001 May 09
+" Version Info: @(#)tsalt.vim	1.5	97/12/16 08:11:15
+
+" For version 5.x: Clear all syntax items
+" For version 6.x: Quit when a syntax file was already loaded
+if version < 600
+  syntax clear
+elseif exists("b:current_syntax")
+  finish
+endif
+
+" turn case matching off
+syn case ignore
+
+"FUNCTIONS
+" Character Handling Functions
+syn keyword tsaltFunction	IsAscii IsAlNum IsAlpha IsCntrl IsDigit
+syn keyword tsaltFunction	IsLower IsUpper ToLower ToUpper
+
+" Connect Device Operations
+syn keyword tsaltFunction	Carrier cInp_Cnt cGetC cGetCT cPutC cPutN
+syn keyword tsaltFunction	cPutS cPutS_TR FlushBuf Get_Baud
+syn keyword tsaltFunction	Get_DataB Get_Port Get_StopB Hangup
+syn keyword tsaltFunction	KillConnectDevice MakeConnectDevice
+syn keyword tsaltFunction	Send_Brk Set_ConnectDevice Set_Port
+
+" File Input/Output Operations
+syn keyword tsaltFunction	fClearErr fClose fDelete fError fEOF fFlush
+syn keyword tsaltFunction	fGetC fGetS FileAttr FileFind FileSize
+syn keyword tsaltFunction	FileTime fnStrip fOpen fPutC fPutS fRead
+syn keyword tsaltFunction	fRename fSeek fTell fWrite
+
+" File Transfers and Logs
+syn keyword tsaltFunction	Capture Capture_Stat Printer Receive Send
+syn keyword tsaltFunction	Set_DefProt UsageLog Usage_Stat UStamp
+
+" Input String Matching
+syn keyword tsaltFunction	Track Track_AddChr Track_Free Track_Hit
+syn keyword tsaltFunction	WaitFor
+
+" Keyboard Operations
+syn keyword tsaltFunction	InKey InKeyW KeyGet KeyLoad KeySave KeySet
+
+" Miscellaneous Functions
+syn keyword tsaltFunction	ChatMode Dos Dial DosFunction ExitTelix
+syn keyword tsaltFunction	GetEnv GetFon HelpScreen LoadFon NewDir
+syn keyword tsaltFunction	Randon Redial RedirectDOS Run
+syn keyword tsaltFunction	Set_Terminal Show_Directory TelixVersion
+syn keyword tsaltFunction	Terminal TransTab Update_Term
+
+" Script Management
+syn keyword tsaltFunction	ArgCount Call CallD CompileScript GetRunPath
+syn keyword tsaltFunction	Is_Loaded Load_Scr ScriptVersion
+syn keyword tsaltFunction	TelixForWindows Unload_Scr
+
+" Sound Functions
+syn keyword tsaltFunction	Alarm PlayWave Tone
+
+" String Handling
+syn keyword tsaltFunction	CopyChrs CopyStr DelChrs GetS GetSXY
+syn keyword tsaltFunction	InputBox InsChrs ItoS SetChr StoI StrCat
+syn keyword tsaltFunction	StrChr StrCompI StrLen StrLower StrMaxLen
+syn keyword tsaltFunction	StrPos StrPosI StrUpper SubChr SubChrs
+syn keyword tsaltFunction	SubStr
+
+" Time, Date, and Timer Operations
+syn keyword tsaltFunction	CurTime Date Delay Delay_Scr Get_OnlineTime
+syn keyword tsaltFunction	tDay tHour tMin tMonth tSec tYear Time
+syn keyword tsaltFunction	Time_Up Timer_Free Time_Restart
+syn keyword tsaltFunction	Time_Start Time_Total
+
+" Video Operations
+syn keyword tsaltFunction	Box CNewLine Cursor_OnOff Clear_Scr
+syn keyword tsaltFunction	GetTermHeight GetTermWidth GetX GetY
+syn keyword tsaltFunction	GotoXY MsgBox NewLine PrintC PrintC_Trm
+syn keyword tsaltFunction	PrintN PrintN_Trm PrintS PrintS_Trm
+syn keyword tsaltFunction	PrintSC PRintSC_Trm
+syn keyword tsaltFunction	PStrA PStrAXY Scroll Status_Wind vGetChr
+syn keyword tsaltFunction	vGetChrs vGetChrsA  vPutChr vPutChrs
+syn keyword tsaltFunction	vPutChrsA vRstrArea vSaveArea
+
+" Dynamic Data Exchange (DDE) Operations
+syn keyword tsaltFunction	DDEExecute DDEInitate DDEPoke DDERequest
+syn keyword tsaltFunction	DDETerminate DDETerminateAll
+"END FUNCTIONS
+
+"PREDEFINED VARAIABLES
+syn keyword tsaltSysVar	_add_lf _alarm_on _answerback_str _asc_rcrtrans
+syn keyword tsaltSysVar	_asc_remabort _asc_rlftrans _asc_scpacing
+syn keyword tsaltSysVar	_asc_scrtrans _asc_secho _asc_slpacing
+syn keyword tsaltSysVar	_asc_spacechr _asc_striph _back_color
+syn keyword tsaltSysVar	_capture_fname _connect_str _dest_bs
+syn keyword tsaltSysVar	_dial_pause _dial_time _dial_post
+syn keyword tsaltSysVar	_dial_pref1 _dial_pref2 _dial_pref3
+syn keyword tsaltSysVar	_dial_pref4 _dir_prog _down_dir
+syn keyword tsaltSysVar	_entry_bbstype _entry_comment _entry_enum
+syn keyword tsaltSysVar	_entry_name _entry_num _entry_logonname
+syn keyword tsaltSysVar	_entry_pass _fore_color _image_file
+syn keyword tsaltSysVar	_local_echo _mdm_hang_str _mdm_init_str
+syn keyword tsaltSysVar	_no_connect1 _no_connect2 _no_connect3
+syn keyword tsaltSysVar	_no_connect4 _no_connect5 _redial_stop
+syn keyword tsaltSysVar	_scr_chk_key _script_dir _sound_on
+syn keyword tsaltSysVar	_strip_high _swap_bs _telix_dir _up_dir
+syn keyword tsaltSysVar	_usage_fname _zmodauto _zmod_rcrash
+syn keyword tsaltSysVar	_zmod_scrash
+"END PREDEFINED VARAIABLES
+
+"TYPE
+syn keyword tsaltType	str int
+"END TYPE
+
+"KEYWORDS
+syn keyword tsaltStatement	goto break return continue
+syn keyword tsaltConditional	if then else
+syn keyword tsaltRepeat		while for do
+"END KEYWORDS
+
+syn keyword tsaltTodo contained	TODO
+
+" the rest is pretty close to C -----------------------------------------
+
+" String and Character constants
+" Highlight special characters (those which have a backslash) differently
+syn match tsaltSpecial		contained "\^\d\d\d\|\^."
+syn region tsaltString		start=+"+  skip=+\\\\\|\\"+  end=+"+  contains=tsaltSpecial
+syn match tsaltCharacter	"'[^\\]'"
+syn match tsaltSpecialCharacter	"'\\.'"
+
+"catch errors caused by wrong parenthesis
+syn region tsaltParen		transparent start='(' end=')' contains=ALLBUT,tsaltParenError,tsaltIncluded,tsaltSpecial,tsaltTodo
+syn match tsaltParenError		")"
+syn match tsaltInParen		contained "[{}]"
+
+hi link tsaltParenError		tsaltError
+hi link tsaltInParen		tsaltError
+
+"integer number, or floating point number without a dot and with "f".
+syn match  tsaltNumber		"\<\d\+\(u\=l\=\|lu\|f\)\>"
+"floating point number, with dot, optional exponent
+syn match  tsaltFloat		"\<\d\+\.\d*\(e[-+]\=\d\+\)\=[fl]\=\>"
+"floating point number, starting with a dot, optional exponent
+syn match  tsaltFloat		"\.\d\+\(e[-+]\=\d\+\)\=[fl]\=\>"
+"floating point number, without dot, with exponent
+syn match  tsaltFloat		"\<\d\+e[-+]\=\d\+[fl]\=\>"
+"hex number
+syn match  tsaltNumber		"0x[0-9a-f]\+\(u\=l\=\|lu\)\>"
+"syn match  cIdentifier	"\<[a-z_][a-z0-9_]*\>"
+
+syn region tsaltComment		start="/\*"  end="\*/" contains=cTodo
+syn match  tsaltComment		"//.*" contains=cTodo
+syn match  tsaltCommentError	"\*/"
+
+syn region tsaltPreCondit	start="^[ \t]*#[ \t]*\(if\>\|ifdef\>\|ifndef\>\|elif\>\|else\>\|endif\>\)"  skip="\\$"  end="$" contains=tsaltComment,tsaltString,tsaltCharacter,tsaltNumber,tsaltCommentError
+syn region tsaltIncluded	contained start=+"+  skip=+\\\\\|\\"+  end=+"+
+syn match  tsaltIncluded	contained "<[^>]*>"
+syn match  tsaltInclude		"^[ \t]*#[ \t]*include\>[ \t]*["<]" contains=tsaltIncluded
+"syn match  TelixSalyLineSkip	"\\$"
+syn region tsaltDefine		start="^[ \t]*#[ \t]*\(define\>\|undef\>\)" skip="\\$" end="$" contains=ALLBUT,tsaltPreCondit,tsaltIncluded,tsaltInclude,tsaltDefine,tsaltInParen
+syn region tsaltPreProc		start="^[ \t]*#[ \t]*\(pragma\>\|line\>\|warning\>\|warn\>\|error\>\)" skip="\\$" end="$" contains=ALLBUT,tsaltPreCondit,tsaltIncluded,tsaltInclude,tsaltDefine,tsaltInParen
+
+" Highlight User Labels
+syn region tsaltMulti	transparent start='?' end=':' contains=ALLBUT,tsaltIncluded,tsaltSpecial,tsaltTodo
+
+syn sync ccomment tsaltComment
+
+
+" Define the default highlighting.
+" For version 5.7 and earlier: only when not done already
+" For version 5.8 and later: only when an item doesn't have highlighting yet
+if version >= 508 || !exists("did_tsalt_syntax_inits")
+  if version < 508
+    let did_tsalt_syntax_inits = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+	HiLink tsaltFunction		Statement
+	HiLink tsaltSysVar		Type
+	"HiLink tsaltLibFunc		UserDefFunc
+	"HiLink tsaltConstants		Type
+	"HiLink tsaltFuncArg		Type
+	"HiLink tsaltOperator		Operator
+	"HiLink tsaltLabel		Label
+	"HiLink tsaltUserLabel		Label
+	HiLink tsaltConditional		Conditional
+	HiLink tsaltRepeat		Repeat
+	HiLink tsaltCharacter		SpecialChar
+	HiLink tsaltSpecialCharacter	SpecialChar
+	HiLink tsaltNumber		Number
+	HiLink tsaltFloat		Float
+	HiLink tsaltCommentError	tsaltError
+	HiLink tsaltInclude		Include
+	HiLink tsaltPreProc		PreProc
+	HiLink tsaltDefine		Macro
+	HiLink tsaltIncluded		tsaltString
+	HiLink tsaltError		Error
+	HiLink tsaltStatement		Statement
+	HiLink tsaltPreCondit		PreCondit
+	HiLink tsaltType		Type
+	HiLink tsaltString		String
+	HiLink tsaltComment		Comment
+	HiLink tsaltSpecial		Special
+	HiLink tsaltTodo		Todo
+
+  delcommand HiLink
+endif
+
+let b:current_syntax = "tsalt"
+
+" vim: ts=8