Used to mark text that should appear with a horizontal line beneath it for display or print
This is normally a print consideration — not a matter for XML tagging — as underlining is frequently prohibited in online works, since it is a common “this is a link” signal.
<!ELEMENT underline (#PCDATA %emphasized-text;)* >
Any combination of:
<addr-line> Address Line; <aff> Affiliation; <alt-title> Alternate Title; <anonymous> Anonymous; <article-title> Article Title; <attrib> Attribution; <bold> Bold; <book-title> Book Title; <chem-struct> Chemical Structure (Display); <citation> Citation; <collab> Collaborative (Group) Author; <collection-name> Collection Name; <comment> Comment in a Citation; <conf-loc> Conference Location; <conf-name> Conference Name; <conf-sponsor> Conference Sponsor; <contract-num> Contract Number; <contract-sponsor> Contract Sponsor; <copyright-statement> Copyright Statement; <corresp> Correspondence Information; <def-head> Definition List: Definition Head; <degrees> Degree(s); <disp-formula> Formula, Display; <edition> Edition, Cited; <etal> Et Al; <ext-link> External Link; <fax> Fax Number: in an Address; <font> Font; <given-names> Given (First) Names; <gov> Government Report, Cited; <grant-num> Grant Number; <grant-sponsor> Grant Sponsor; <inline-formula> Formula, Inline; <inline-supplementary-material> Inline Supplementary Material; <institution> Institution Name: in an Address; <issue> Issue Number; <italic> Italic; <kwd> Keyword; <label> Label (Of a Figure, Reference, Etc.); <meta-name> Metadata Data Name for Custom Metadata; <meta-value> Metadata Data Value for Custom Metadata; <monospace> Monospace Text (Typewriter Text); <named-content> Named Special (Subject) Content; <on-behalf-of> On Behalf of; <overline> Overline; <p> Paragraph; <patent> Patent Number, Cited; <phone> Phone Number: in an Address; <prefix> Prefix; <preformat> Preformatted Text; <publisher-loc> Publisher’s Location; <publisher-name> Publisher’s Name; <related-article> Related Article Information; <related-object> Related Object Information; <role> Role or Function Title of Contributor; <sans-serif> Sans Serif; <sc> Small Caps; <series> Series; <sig> Signature; <sig-block> Signature Block; <source> Source; <std> Standard, Cited; <strike> Strike Through; <sub> Subscript; <subject> Subject Grouping Name; <subtitle> Subtitle; <suffix> Suffix; <sup> Superscript; <supplement> Supplement Information; <surname> Surname; <target> Target of an Internal Link; <td> Table Data Cell (XHTML table model); <term> Definition List: Term; <term-head> Definition List: Term Head; <th> Table Header Cell (XHTML table model); <title> Title; <trans-source> Translated Source; <trans-subtitle> Translated Subtitle; <trans-title> Translated Title; <underline> Underline; <uri> Uniform Resource Indicator (URI); <verse-line> Line of a Verse; <volume> Volume Number; <volume-id> Volume Identifier; <xref> X(cross) Reference
... <p>... Oligonucleotide primers for the amplification of TbH4 included 5′-ATTAGGT<italic>CAT</italic> <underline><italic>ATG</italic></underline> <bold>CACCATCACCATCACCAT</bold>ACGCAGTCGCAGACCGTGACGG and 3′-TATAGG<italic>AAGCTT</italic>CTAATCCTCGGTGTAGAGCGCCTCG. XP-1 was amplified with 5′-CAATTA<italic>CAT</italic> <underline><italic>ATG</italic></underline> <bold>CATCACCATCACCATCAC</bold>AACGACGGCGAAGGAACTGTGC and 3′-AACCTG<italic>GAATTC</italic>GTCCATGCTCACTTCGAC, and the 38-kDa antigen was amplified with 5′-CAATTA<italic>CAT</italic> <underline><italic>ATG</italic></underline> <bold>CATCACCATCACCATCAC</bold>TGTGGCTCGAAACCACCGAGC and 3′-GTACG<italic>GAATTC</italic>GTGGTCAACGAGGCTAGCTGG. Amplification product was digested ...</p> ...
format.ent