Highlight Sets — Xshell

Supports both exact keyword matching and complex pattern matching via regular expressions.

You can define unique highlights for different sessions (e.g., one set for Cisco routers and another for Linux servers). xshell highlight sets

Unlike a standard , which changes the background and default text colors for the entire terminal, a Highlight Set works like a real-time search and mark tool. It continuously tracks strings in the terminal window and applies pre-defined styling as soon as they appear. Supports both exact keyword matching and complex pattern

Xshell highlight sets are a powerful terminal automation feature that allows users to define custom visual cues for specific text strings or patterns within their terminal output. By creating these sets, you can automatically emphasize critical information—such as "ERROR" messages, specific IP addresses, or status codes—using distinct colors and font styles. It continuously tracks strings in the terminal window

Check this to distinguish between "error" and "ERROR".