At "advanced, configuration, Editor display, syntax highlighting" you can edit your "wordfile".
You can download additional wordfile-sections from ultraedit.com and add it to your existing wordfile.
Up to 20 languages are supported. You can select manually via "view, View as..." how syntax is shown.
Auto-complete takes the words from wordfile too.
So all you need is there.
In the online help search, just type "wordfile". It is explained there.

rds Bego

At Advanced - Configuration - Word Wrap / Tab Settings you can specify an auto-complete file. This file is for files with the file extension shown in the drop down list above. So you can have for example an auto-complete file for files with extension c cpp h, a second one for files with the extension htm html, a third one for js files and a forth file for php files.

Open also help of UltraEdit, select tab Index, enter or copy Auto Completion into the edit field and read the page with that title.

In the auto-completion file you can specify not only words for completion, you can specify whole sentences or statements or expressions.