set requireattrs= { on | off}

When set requireattrs is set to on and a tag that has required attributes is inserted, the Modify Attributes dialog box for that tag is automatically opened. If you attempt to exit or quit the Modify Attributes dialog box without supplying values for all required attributes, you are asked if you wish to supply required attributes before exiting.

If inserting the tag causes other tags with required attributes to be inserted, you are presented with the Modify Attributes dialog box for those tags as well.