>>> import albatross
>>> ctx = albatross.SimpleContext('.')
>>> albatross.Template(ctx, '<magic>', '''
... <al-macro name="bold-red">
... <font color="red">more <al-expand name="bold"><al-usearg></al-expand> please</font>
... <font color="red"><al-expand name="bold">more <al-usearg> please</al-expand></font>
... </al-macro>
... 
... <al-macro name="bold">
...  <b><al-usearg></b></al-macro>
... ''').to_html(ctx)
>>> ctx.flush_content()
>>> albatross.Template(ctx, '<magic>', '''
... <al-expand name="bold-red">spam</al-expand>
... ''').to_html(ctx)
>>> ctx.flush_content()
<font color="red">more <b>spam</b> please</font>
<font color="red"><b>more spam please</b></font>