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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 5176 | $indicator = '<span class="required">' . esc_html( $glyph ) . '</span>'; |
| 5177 | |
| 5178 | /** |
| 5179 | * Filters the markup for a visual indicator of required form fields. |
| 5180 | * |
| 5181 | * @since 6.1.0 |
| 5182 | * |
| 5183 | * @param string $indicator Markup for the indicator element. |
| 5184 | */ |
| 5185 | return apply_filters( 'wp_required_field_indicator', $indicator ); |
| 5186 | } |
| 5187 | |
| 5188 | /** |
| 5189 | * Creates a message to explain required form fields. |
| 5190 | * |
| 5191 | * @since 6.1.0 |
| 5192 | * |
| 5193 | * @return string Message text and glyph wrapped in a `span` tag. |
| 5194 | */ |