diff -ur v24/ezmd.py v25/ezmd.py
--- v24/ezmd.py	2019-10-07 04:19:38.000000000 +0900
+++ v25/ezmd.py	2019-10-07 22:18:22.000000000 +0900
@@ -69,7 +69,14 @@
 
 outbuf = outbuf_new()
 
+tag_props = {}
+
 def tag_new(name, prop, v):
+	b = tag_props.get(name, {})
+	if b:
+		(arg, prop) = ( prop, b.copy() )
+		prop.update(arg)
+
 	return Empty( locals() )
 
 def tag_to_dic(tag):
@@ -144,17 +151,36 @@
 	f = lambda lst: ( lst[0], delim.join( lst[1:] ) )
 	return f( s.split(delim) )
 
+def do_prop(v1, v2):
+	tag_props.clear()
+	if v2 and v2 != v1:
+		try:
+			d = yaml.load(v2)
+			if type(d) == dict:
+				tag_props.update(d)
+		except:
+			pass
+	return []
+
 def do_v1v2(v1, v2):
+	lst = ('s', 'em', 'strong', 'u', 'i', 'b')
+	if v1 in lst:
+		return tag_new(v1, {}, v2)
+
+	d = { '-': 's', '*': 'em', '**': 'strong', '_': 'u', '/': 'i' }
+	if v1 in d:
+		return tag_new( d.get(v1), {}, v2 )
+
 	if v1 == 'img':
 		return tag_new('img', {'src': v2}, '/')
 	if v1 == 'video':
 		return tag_new('video', {'src': v2, 'controls': None, 'playsinline': None}, '')
-	if v1 == '-':
-		return tag_new('s', {}, v2)
 	if v1 == 'name':
 		return tag_new('a', {'name': v2}, '')
 	if v1 == 'paste':
 		return outbuf.lst_get(v2)
+	if v1 == 'prop':
+		return do_prop(v1, v2)
 	return tag_new('a', {'href': v1}, v2) if v1 else v2
 
 def do_br(s):
@@ -223,8 +249,11 @@
 	list( map(buf_to_stk_lsts, buf) ) # make lists
 
 	def lst_to(lst):
-		f = lambda o: lst_to(o) if type(o) == list else tag_new( 'li', {'/': None}, do_str(o) )
-		lst = list( map(f, lst) )
+		def fs(s):
+			sol = do_str(s)
+			return tag_new( 'li', {'/': None}, sol ) if sol != [] else []
+		f = lambda o: lst_to(o) if type(o) == list else fs(o)
+		lst = list( flat_map(f, lst) )
 		return tag_new('ul', {}, lst)
 
 	outbuf.extend( list( map(lst_to, lsts) ) )
@@ -283,10 +312,11 @@
 			(t, s) = split_num(s)
 			if t:
 				prop[ '{}span'.format(cr) ] = int(t)
-		return tag_new( md, prop, do_str( s.strip() ) )
+		v = do_str( s.strip() )
+		return tag_new(md, prop, v) if v != [] else []
 
 	lst = flat_map( lambda s_md: th_td(*s_md), lst )
-	return tag_new('tr', {}, lst)
+	return tag_new('tr', {}, lst) if lst != [] else []
 
 tbl_prop = { 'border': 1, 'cellspacing': 0 }
 
@@ -295,7 +325,7 @@
 	buf = lst_strip(buf)
 	buf = cut_empty(buf)
 	if buf:
-		v = list( map(do_tr, buf) )
+		v = list( flat_map(do_tr, buf) )
 		outbuf.append( tag_new('table', tbl_prop, v) )
 
 def ul_to_tbl(ul):
@@ -339,6 +369,7 @@
 				cv_to_tbl(tag_, x, tbl)
 		elif tag.name == 'li':
 			prop = {}
+			prop.update( dict( filter( lambda kv: kv[0] not in ('sub_ul', '/'), tag.prop.items() ) ) )
 			tr = tbl.v[-1]
 			(name, v) = li_to_name_v(tag.v)
 			tr.v.append( tag_new(name, prop, v) )