catch name
#markup-end event
    
 Use #markup-end to signal the end of a markup-region-event to a do
          markup-parse. A signal to #markup-end must be paired with a matching signal to
        #markup-start, with both referring to the same event (see ==).   
      
 The element rules in the following example merge consecutive para elements in each section
        into one:
        
global markup-region-event first-para-event variable to 1 element "section" output "%c" do when number of first-para-event = 1 signal throw #markup-end first-para-event clear first-para-event done element "para" do when number of first-para-event = 0 signal throw #markup-start #current-markup-event set new first-para-event to #current-markup-event done output #content