How to generate the custom help box for a custom function (More Help...)

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Hi everyone,
I recently dealt with proper help for my custom functions.
I found out that there are 4 points one can handle:
  1. doc myfun: Will show file help or if available the html help (
  2. writing your function, then typing in the opening bracket and waiting. A small box will appear showing input parameters
  3. help myfun: Will display the comments at the top of the function (
  4. tab completion with functionSignatures.json ( and also
For 2.: Where can I find how to do this? For custom functions, only the input parameters are shown. But for Matlab Built-Ins, all available syntaxes are shown. They sometimes even differ from the "syntax" part in the html help, see movmean function help and the "bracket opening"-help for the info on datetime object, see picture below.
Are there even other "standard" help functionalities besides the four above?
Thanks for some advice.

Answers (3)

Sahithi Kanumarlapudi
Sahithi Kanumarlapudi on 18 Dec 2019
You can refer to a similar question here
  1 Comment
breathi on 18 Dec 2019
Edited: breathi on 18 Dec 2019
Hi there,
this question you linked does not seem to be answered at all. From what I understood, this refers to point 4 I mentioned and is only referring to live scripts, not the command window? See Jan's comment.

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Ran on 5 Jan 2020
I encountered the same issue.
Is there a solution (for the normal editor, not the live-script editor) ?
  1 Comment
Jan Kappen
Jan Kappen on 13 May 2020
I bet the normal editor shall be replaced soon, no updates were made a long time and all efforts were spent to the javascript/online interface.

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Andrii Zelenko
Andrii Zelenko on 10 Jul 2021
You basically just add comments at the begining of your custom funciton and aafter typing
help your_custom_function
comments will poped up




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