Keep the core regex anchors, classes, quantifiers, groups, and flags in a fast in-browser reference.
Sections
Jump between the main regex building blocks and keep the reference close at hand.
Reference
Anchors
^^TODOStart of string or line
$done$End of string or line
\b\berror\bWord boundary
\B\Bing\BNot a word boundary
\A\AHelloAbsolute start of input in some regex engines
\Zworld\ZAbsolute end of input in some regex engines
How To Use
Use this as the fast reference surface while building or debugging a pattern in the tester, explainer, or builder.
It is intentionally compact: enough syntax to keep you moving without dropping into full documentation.