heading tag definition
Heading Tags come with various attributes to make user-friendly websites but Search Engines use these defined headings solely to index the structure and content of web documents including blog posts. Field 630 may be used by any institution assigning subject headings based on the lists and authority files identified in the second indicator position or in subfield $2 (Source of heading or term).
defines the most important heading. What is it? 1 a : something that forms or serves as a head especially : an inscription, headline, or title standing at the top or beginning (as of a letter or chapter) b : the address and date at the beginning of a letter showing its place and time of origin. See more. The