Issue I511 [enhancement,lua,resolved] Add standalone Lua interpreter lua.exe. Purpose: The file "lua.exe" inside the SIMION program folder is a Lua interpreter. It is described in The Lua 5.1 Reference Manual: 6. Lua Stand-alone. Although you can run Lua programs inside SIMION, there may be times at which you may want to run Lua programs using the standard Lua interpreter interface. Perhaps you want to run Lua programs outside of SIMION, or perhaps you need run some debugger or compile some code that depends on the existence of the lua.exe interpreter. Implementation: The "lua.exe" included here is actually just a proxy to the copy of Lua embedded inside the SIMION program (simion.exe). This proxy is included for your convenience. Therefore, lua.exe depends on simion.exe, which must exist in the same folder as lua.exe for lua.exe to run. (Conversely, simion.exe does not at all depend on lua.exe.) Running lua.exe is actually equivalent to running "simion.exe --nogui lua" from the command line (see Appendix M "Command Line Interface" of the printed SIMION 8.0 manual). In fact, if you rename the "simion.exe" file to anything prefixed by "lua" (e.g. "lua5.1.exe") and run that file, SIMION will behave as if you did "simion.exe --nogui lua" too. Multiple versions: If you have multiple versions of the simion.exe program (e.g. simion.exe, simion-8.0.5.exe, and simion-8.0.5-TEST25.exe) installed in the folder where lua.exe exists, then lua.exe points to simply simion.exe. If you copy or rename lua.exe to lua-8.0.5.exe or lua-8.0.5-TEST25.exe, then it will point to simion-8.0.5.exe or simion-8.0.5-TEST25.exe respectively. This allows you to have Lua interpreters corresponding to multiple versions of SIMION in the same program folder. Version-specific notes: The "lua.exe" proxy was added in SIMION 8.0.5-TEST25. The above comments do not apply to earlier versions of SIMION. Implemented in 8.0.5-TEST25.