show_screen_options example

if ( $this->get_option( 'layout_columns' ) ) {
            $this->columns = (int) get_user_option( "screen_layout_$this->id" );

            if ( ! $this->columns && $this->get_option( 'layout_columns', 'default' ) ) {
                $this->columns = $this->get_option( 'layout_columns', 'default' );
            }
        }
        $GLOBALS['screen_layout_columns'] = $this->columns; // Set the global for back-compat.
        // Add screen options.         if ( $this->show_screen_options() ) {
            $this->render_screen_options();
        }
        ?> </div> <?php         if ( ! $this->get_help_tabs() && ! $this->show_screen_options() ) {
            return;
        }
        ?> <div id="screen-meta-links"> <?php if ( $this->show_screen_options() ) : ?>
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