> For the complete documentation index, see [llms.txt](https://docs.hex-rays.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hex-rays.com/9.1/user-guide/user-interface/menu-bar/options/low-and-high-suspicious-operand-limits.md).

# Low & High Suspicious Operand Limits

If IDA suspects that an operand can be represented as something different from a plain number, it will mark the operand as "suspicious" and display it in red/orange.

Two values control the definition of suspiciousness. An operand is 'suspicious' if it has an immediate value between low and high 'suspicious' limits. The comparison is always unsigned, i.e. in the instruction

```
        mov ax,[bp-2]

  the immediate operand is 0xFFFE, not -2.
```

IDA uses a simple heuristic to determine initial suspiciousness limits. You may change these limits any time you want.

See also

* [Comments Dialog](/9.1/user-guide/user-interface/menu-bar/options.md#comments-dialog)
* [How to Enter a Number](/9.1/user-guide/disassembler/navigation/how-to-enter-a-number.md).


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.hex-rays.com/9.1/user-guide/user-interface/menu-bar/options/low-and-high-suspicious-operand-limits.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.