$Id: README,v 1.3 2019/03/22 15:38:09 schwarze Exp $ Here's a quick note on how to add new DocBook elements. First, look up the element in the DocBook reference. For element , this is usually: https://tdg.docbook.org/tdg/5.1/foo.html Some elements are no longer defined in DocBook 5. For these, you will have to look at 4.5 documentation instead: https://tdg.docbook.org/tdg/4.5/foo.html Add the alpha-ordered node (NODE_FOO) to extern.h. Next, add the name and whether it admits text to docbook2mdoc.c's "nodes" structure array. Finally, modify pnode_print() with your new entry. Use similar nodes as a reference. (NOTE: if it's an inline like, say, NODE_EMPHASIS, then remember to add the node to the postfix switch statement!)