# [] reserved characters

The [] reserved characters perform substring
extraction, assignment, and field store.

## Example(s)

```
if response[1,1] = "y" then printer on
```

## See also

- [! logical operator](https://d3codex.com/pickbasic-flashbasic/exclamation-logical-operator/)
- [() reserved characters](https://d3codex.com/pickbasic-flashbasic/parenthesis-reserved-characters/)
- [* statement](https://d3codex.com/pickbasic-flashbasic/asterisk-statement/)
- [- arithmetic operator](https://d3codex.com/pickbasic-flashbasic/minus-arithmetic-operator/)
- [: relational operator](https://d3codex.com/pickbasic-flashbasic/colon-relational-operator/)
- [; reserved character](https://d3codex.com/pickbasic-flashbasic/semicolon-reserved-character/)
- [= assignment operator](https://d3codex.com/pickbasic-flashbasic/equals-assignment-operator/)
- [> relational operator](https://d3codex.com/pickbasic-flashbasic/greater-than-relational-operator/)
- [@() function](https://d3codex.com/pickbasic-flashbasic/at-parenthesis-function/)
- [Relational operators](https://d3codex.com/pickbasic-flashbasic/relational-operators/)
- [Substring expressions](https://d3codex.com/pickbasic-flashbasic/substring-expressions/)
- [Substring expressions](https://d3codex.com/pickbasic-flashbasic/substring-expressions/)
- [Substring expressions](https://d3codex.com/pickbasic-flashbasic/substring-expressions/)
- [Substring expressions](https://d3codex.com/pickbasic-flashbasic/substring-expressions/)
- [^ arithmetic operator](https://d3codex.com/pickbasic-flashbasic/caret-arithmetic-operator/)

---
Source: https://d3codex.com/pickbasic-flashbasic/brackets-reserved-characters/ - part of the D3Codex reference.