# Insertion mode

The parser state that selects tree-construction rules based on the current document context.

## What is **Insertion mode**?

**Insertion mode** — The parser state that selects tree-construction rules based on the current document context.

Level: Master · [More HTML terms at this level](https://www.ask-codey.com/glossary/subjects/html/master)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/insertion-mode