made the pack completely portable and wrote relevent bat files to go with it

gitportable/usr/share/vim/vim91/syntax/model.vim

@@ -0,0 +1,45 @@
+" Vim syntax file
+" Language:	Model
+" Maintainer:	The Vim Project <https://github.com/vim/vim>
+" Last Change:	2023 Aug 10
+" Former Maintainer:	Bram Moolenaar <Bram@vim.org>
+
+" very basic things only (based on the vgrindefs file).
+" If you use this language, please improve it, and send patches!
+
+" Quit when a (custom) syntax file was already loaded
+if exists("b:current_syntax")
+  finish
+endif
+
+" A bunch of keywords
+syn keyword modelKeyword abs and array boolean by case cdnl char copied dispose
+syn keyword modelKeyword div do dynamic else elsif end entry external FALSE false
+syn keyword modelKeyword fi file for formal fortran global if iff ift in integer include
+syn keyword modelKeyword inline is lbnd max min mod new NIL nil noresult not notin od of
+syn keyword modelKeyword or procedure public read readln readonly record recursive rem rep
+syn keyword modelKeyword repeat res result return set space string subscript such then TRUE
+syn keyword modelKeyword true type ubnd union until varies while width
+
+" Special keywords
+syn keyword modelBlock beginproc endproc
+
+" Comments
+syn region modelComment start="\$" end="\$" end="$"
+
+" Strings
+syn region modelString start=+"+ end=+"+
+
+" Character constant (is this right?)
+syn match modelString "'."
+
+" Define the default highlighting.
+" Only used when an item doesn't have highlighting yet
+hi def link modelKeyword	Statement
+hi def link modelBlock		PreProc
+hi def link modelComment	Comment
+hi def link modelString		String
+
+let b:current_syntax = "model"
+
+" vim: ts=8 sw=2