51.
The __________ element may contain not just links but also other interactive items, including the newly introduced command element.

52.
The __________ attribute effectively renders the iframe as an inline include, which allows the parent document’s CSS to affect the contents of the iframe

53.
Which of the following allows the sandboxed iframe to run scripts from the same domain?

54.
__________ allows the iframe to pull in content from elsewhere in the same domain.

55.
All elements are identified by their __________ and are marked up using either start tags and end tags or self-closing tags

56.
The __________ element represents a span of text that is isolated from its surroundings for the purposes of bidirectional text formatting

57.
The interactive element audio with the attribute controls must not appear as a descendant of which element?

58.
A ____________ element must have a start tag but must not have an end tag.

59.
Which type attribute of input element sets the element’s value to a string representing a number?

60.
Which of the following type attributes of input element defines control for entering a telephone number?

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