Hi,
I think GAMS Studio which is way better than GAMS IDE has some missing features.
For example, other text editors provide highlight, text automation for variables, parameters, and so on.
Are there external text editor for GAMS?
Hope there is a text editor that I can build my gms file on the editor.
Jake.
Hi Jake,
I do not have other text editors to suggest. I am actually pretty happy with GAMS Studio, but I am biased… 
You raised good points for features missing in Studio. It actually has some auto-complete feature, but just for predefined keywords, dollar control options and the like:
Offering the same for user defined symbols is on our list, but it will take a while before it is there.
You mentioned, that other editors “provide highlight”. I did not understand that. Could you say, what you mean by this?
Best regards,
Lutz
Yes, I do really enjoy many features in Studio, including black theme that is recently added.
Wayyyyy better than IDE!
By the way, can you please elaborate how to use auto-complete feature for pre-defined keywords?
When I write “option s” there is no suggestion like the capture you uploaded.
For highlight option, I know there are some highlight keywords such as ord, sum, etc.
I just wanna know if it is possible for highlighing some basic mathematical functions such as floor, mod, and etc.
Best,
Jake
Thanks! 
By default (i.e., if “Auto open completer” is not deactivated in the Settings on the “Editor & Log” Tab), it opens after three characters are typed and there is something to complete. But you can force it to open at any time by pressing Ctrl + Space. I did that for the screenshot.
Got it! I will add this to our list of future enhancements.
Thanks for your feedback!
Lutz
Hi,
I just want to let you know, that this was added to Studio in the meantime.
Lutz
If you want to try something different, I use Visual Studio with the GAMS language extension. I didn’t know GAMS Studio existed, so I’ll have to check that one out.