guitarbug:
> as below picture show, the menu "Options" is too long, is there any method to customise this menu and make it more shorter?
Yes, there are imports.include and imports.exclude properties.
https://www.scintilla.org/SciTEDoc.html#property-imports.include
If you just want a few languages, find their .properties file names and set imports.include in your user options file to just that set:
imports.include=cpp python html
This is done on a file basis, not language basis as a properties file may define multiple related languages like php in the html properties.
Depending on platform, you may need to restart for all UI elements to be configured.
Neil