diff --git a/runtime/syntax/tssop.vim b/runtime/syntax/tssop.vim
new file mode 100644
index 0000000..d416df0
--- /dev/null
+++ b/runtime/syntax/tssop.vim
@@ -0,0 +1,87 @@
+" Vim syntax file
+" Language:     TSS (Thermal Synthesizer System) Optics
+" Maintainer:   Adrian Nagle, anagle@ball.com
+" Last Change:  2003 May 11
+" Filenames:    *.tssop
+" URL:		http://www.naglenet.org/vim/syntax/tssop.vim
+" MAIN URL:     http://www.naglenet.org/vim/
+
+
+
+" 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
+
+
+
+" Ignore case
+syn case ignore
+
+
+
+"
+"
+" Begin syntax definitions for tss optics file.
+"
+
+" Define keywords for TSS
+syn keyword tssopParam  ir_eps ir_trans ir_spec ir_tspec ir_refract
+syn keyword tssopParam  sol_eps sol_trans sol_spec sol_tspec sol_refract
+syn keyword tssopParam  color
+
+"syn keyword tssopProp   property
+
+syn keyword tssopArgs   white red blue green yellow orange violet pink
+syn keyword tssopArgs   turquoise grey black
+
+
+
+" Define matches for TSS
+syn match  tssopComment       /comment \+= \+".*"/ contains=tssopParam,tssopCommentString
+syn match  tssopCommentString /".*"/ contained
+
+syn match  tssopProp	    "property "
+syn match  tssopProp	    "edit/optic "
+syn match  tssopPropName    "^property \S\+" contains=tssopProp
+syn match  tssopPropName    "^edit/optic \S\+$" contains=tssopProp
+
+syn match  tssopInteger     "-\=\<[0-9]*\>"
+syn match  tssopFloat       "-\=\<[0-9]*\.[0-9]*"
+syn match  tssopScientific  "-\=\<[0-9]*\.[0-9]*E[-+]\=[0-9]\+\>"
+
+
+
+" 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_tssop_syntax_inits")
+  if version < 508
+    let did_tssop_syntax_inits = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+  HiLink tssopParam		Statement
+  HiLink tssopProp		Identifier
+  HiLink tssopArgs		Special
+
+  HiLink tssopComment		Statement
+  HiLink tssopCommentString	Comment
+  HiLink tssopPropName		Typedef
+
+  HiLink tssopInteger		Number
+  HiLink tssopFloat		Float
+  HiLink tssopScientific	Float
+
+  delcommand HiLink
+endif
+
+
+let b:current_syntax = "tssop"
+
+" vim: ts=8 sw=2